Sending out emails is easy. Are you getting people to open them? Not so much. Few people will ever see if your messages consistently land in the spam folder. Even if you reach the promotions tab or another directory, your email won’t have nearly the same engagement if it landed right in the target’s inbox. Email deliverability tools help improve your reach and engagement by ensuring your messages reach their intended destination. In this article, we’ll explore the best cold email deliverability tools to help you maximize email reach and engagement by consistently landing emails in recipients' inboxes, driving better results from every campaign.

Inframail's email infrastructure is an invaluable tool for achieving your email goals. This tool ensures that your cold email campaigns achieve maximum reach and deliverability.

Table of Content

• What Is Email Deliverability and Its Importance

• 27 Best Email Deliverability Tools for Higher Inbox Placement

• How Do I Maximize Email Deliverability?

• Start Buying Domains Now and Setup Your Email Infrastructure Today

What Is Email Deliverability and Its Importance

Email deliverability measures the success of email campaigns by calculating the percentage of emails that reach the inbox, not the spam folder or other tabs. For example, if 80 of your 100 emails reach the inbox, your deliverability rate is 80%. This means there’s an 80% chance of any particular email ending up in the recipient’s inbox. 

Deliverability Rate = (Emails Delivered / Total Emails Sent) × 100%

Example:

Emails Sent: 1000

Emails Delivered: 950

Deliverability Rate = (950 / 1000) × 100% = 95%

Email Delivery vs. Email Deliverability: Why Hitting the Inbox Matters

You’re not alone if you’re confused about the difference between email deliverability and email delivery. Many people use the terms interchangeably, but they’re not the same. 

• Email delivery refers to how many emails have reached any folder, including the spam folder. 

• Email deliverability measures how many emails have reached the inbox. 

As you can see, a high delivery rate doesn’t mean you’re blessed with your email outreach; you don’t know how many of your emails hit the inbox versus how many have derailed into the spam folder. A high deliverability rate, however, indeed guarantees some attention from your recipients. 

The Cost of Poor Email Deliverability: How It Impacts Your Bottom Line

So why does email deliverability matter, anyway? Well, let’s take a look at the stats. Up to 20% of emails do not reach their destination for being either blocked by the recipient’s Internet Service Provider (ISP) or sent to the spam folder. Low email deliverability signifies the gradual death of your email marketing, costing you an arm and a leg and stomping your business into the muck. 

On the bright side, email deliverability is well-known across email marketing, with the world’s best minds toiling to create failproof email deliverability tools. 

What’s a Good Email Deliverability Rate? 

The higher your deliverability rate, the better (duh). With a 90% deliverability rate considered excellent, it’s hard to accurately determine your benchmark for the abundance of variables in the equation. That said, there are some constant factors affecting an email deliverability rate. 

Factors Affecting Your Email Deliverability Rate 

1. Email Sender Reputation

Email sender reputation is a score assigned by your ISP based on how well your emails perform, including: 

• Open rates

• CTR

• Bounce rates

• Unsubscribe rates

• Spam complaints and more

ISPs give little insight into their scoring methods, but it’s pretty clear that reputation is King, especially in the eyes of Google or Microsoft. Your email sender reputation can vary from 0 to 100, with 90 being considered good and anything below 70 extremely risky for your email outreach. A fair share of emails from a sender with a low reputation will be blocked, so it’s no use bombarding people with emails before you fix your reputation. 

2. Sender Policy Framework (SPF)  

Sender Policy Framework (SPF) is an email authentication protocol that verifies that the domain owner authorizes emails sent from a specific domain. The SPF record is a list of authorized IP addresses and mail servers associated with the domain, allowing the email provider to verify that the email in question comes from an authorized source. The verification is done by comparing the sender’s IP address with the IP address in the record. 

If the IP address matches, the email goes through; otherwise, it is blocked. SPF records unmistakably determine the legitimacy of emails, protecting users from spammers and impersonating phishing attacks. Having an SPF-protected email adds credibility in the eyes of the recipient’s ISP and increases your chances of hitting the inbox. 

3. DomainKeys Identified Mail (DKIM)

Much like SPF, DomainKeys Identified Mail (DKIM) is an email authentication protocol that allows email providers to verify that you take responsibility for the email sent. DKIM uses cryptographic authentication to verify the sender’s identity and ensure the message is not tampered with during transit. In practice, the company adds a DKIM signature to the email header, assuring the email’s legitimacy, which the recipient’s email provider can verify. 

At the end of the day, though, the quality of content determines whether your subscribers fall in love with your emails, granting you a conversion chance. Read more about how to boost your email deliverability with quality content. 

Types of Email Deliverability Tools 

Many factors influence email deliverability, and understanding the root cause of your issues is critical to solving them. While numerous email deliverability solutions are available, many focus on one or two aspects of improving deliverability. This section will help you understand the different types of email deliverability services and guide you in selecting the most suitable one. I’ve categorized these email deliverability services into four main types. 

1. Testing

These tools only perform email deliverability tests. They aim to pre-check emails before sending them to ensure they meet deliverability standards. These test checks are usually included in these tools: 

• Authentication tests

• Spam filter testing

• Blacklisting checks

• Content and design
  
  
  

2. Monitoring

These tools have a feature that helps users monitor email deliverability status live. They help pinpoint what went wrong in a specific campaign. These tests are usually included in these tools, like: 

• ISP feedback loops

• Deliverability metrics tracking

• Reputation monitoring

• Blacklist monitoring checks 

3. Diagnosis

These tools help diagnose email deliverability issues. They check multiple sources from where it can be affected. They provide critical details and in-depth analysis of the issue. Sometimes, the cure for the problem is also included. These tests are usually included in these tools, like:

• Bounce analysis

• Spam complaint tracking

• Authentication issues

• Reputation diagnoses

4. Cold Outreach & Deliverability Tools

These are tools that provide comprehensive cold outreach and email deliverability solutions. They allow users to manage their email campaigns until they reach the prospect’s inbox, optimizing cold outreach deliverability and ensuring emails reach the prospect’s inbox. 

Other tools allow users to track their email deliverability using multiple features and manage everything related to their campaigns in one place. These tools usually include tests like: 

• Authentication tests

• Unified dashboard

• List hygiene management performance optimization suggestions

Related Reading

• Automated Lead Generation
• Email Prospecting
• How to Generate B2B Leads
• How to Warm Up Email Domain
• How Many Emails Can You Send Before Considered Spam
• Best Time to Send Cold Emails
• How to Cold Email
• Best Cold Email Templates B2B
• Email Outreach Best Practices
• Email Outreach Strategy

27 Best Email Deliverability Tools for Higher Inbox Placement

1. Inframail

At Inframail, we are revolutionizing cold email infrastructure with unlimited inboxes at a flat rate. We provide: 

• Microsoft-backed deliverability

• Dedicated IP addresses

• Automated technical setup 

 It helps these people scale their outreach efforts efficiently: 

• Agencies

• Recruiters

• Sales development represent

Main benefits of using our service: 

• Automated SPF

• DKIM

• DMARC setup

• Dedicated email servers for each user

• 16-hour priority support daily

Unlike traditional providers that charge per inbox and leave you wrestling with technical configurations, Inframail streamlines the entire process. We handle the complex infrastructure setup while you focus on reaching more prospects. InfraMail provides a robust email infrastructure without the usual technical headaches and per-inbox costs, whether you're: 

• An agency looking to scale outreach

• A recruiter connecting with candidates

• An SDR driving sales

Inframail's Automated Email Setup 

Setting up your email infrastructure for cold outreach can be a real headache, but Inframail’s fast, automated setup process eliminates the pain. Gone are the days of manually configuring SPF, DKIM, and DMARC records or struggling with domain forwarding. With Inframail, your email accounts can be ready to go in just a few clicks. Here's how Inframail's automated setup compares to traditional methods.

But why is this automated setup so crucial for your cold email campaigns? Let's break it down: 

Time-saving: Spend less time on technical setup and more on crafting compelling emails. 
Error reduction: Automated configuration minimizes the risk of human error. 
Scalability: Create unlimited email accounts effortlessly as your outreach grows. 

Mastering Email Deliverability with Inframail 

Regarding cold email outreach, getting your messages into prospects' inboxes is half the battle. 

Inframail excels in this area, employing advanced strategies to optimize email deliverability and help you avoid the dreaded spam folder.  

Inframail's Deliverability Boosters:  

• Smart Spam Filter Avoidance: Inframail's infrastructure is designed to minimize the risk of your emails being flagged as spam, using advanced algorithms to analyze and optimize your email content.

•  IP Address Rotation: By intelligently rotating IP addresses, Inframail helps maintain your sender reputation and improves deliverability across multiple campaigns.

• Open Rate and Bounce Rate Optimization: Inframail provides real-time analytics and tools to help you monitor and improve your open rates while keeping bounce rates low.  

How to Interpret and Improve Your Email Deliverability Rate

Let's look at how these features impact your email deliverability: 

Deliverability Rate = (Emails Delivered / Total Emails Sent) × 100% 

Example: 
Emails Sent: 1000 
Emails Delivered: 950 
Deliverability Rate = (950 / 1000) × 100% = 95% 

Inframail users often report deliverability rates of 90% or higher, compared to industry averages of 70-80% for cold email campaigns.  

Managing Your Inbox with Inframail 

Managing multiple email accounts for cold outreach can quickly become overwhelming. Inframail's creative inbox management features help to simplify your workflow and keep you organized, even as your campaigns scale.  

Key Inbox Management Features:  

• Unified Master Inbox: Access all your email accounts from a centralized dashboard.

• Automatic Out-of-Office Reply Detection: Inframail intelligently identifies and archives out-of-office responses, keeping your inbox clutter-free. 

• Advanced Email Prioritization: Easily categorize and prioritize emails based on importance and urgency.  

Integrating Inframail with Your Tools  

Nowadays, it’s vital to link your email setup with other tools. Inframail excels at offering many options to improve your cold email campaigns.  

Inframail's Integration Ecosystem:  

1. Native Cold Email Tool Integrations  

• Mailshake

• Lemlist 

• Woodpecker 

• And more  

2. Communication Software Compatibility  

• Slack

• Zoom

• Skype  

3. CSV File Integration 
Easily import bulk email lists and recipient data.  

2. Glockapps

GlockApps is an advanced email deliverability tool that you should consider if you want to optimize your email deliverability score at all costs. The good thing about GlockApps is that you can easily learn to use it and quickly increase your email deliverability score. 

Instead of just sending out your messages and hoping for the best, it simulates to see precisely where those emails would hypothetically end up:

• Primary inbox

• Spam folder

• Getting bounced because of invalid addresses on your list.  

Type

• Testing

• Monitoring  

Key Features

Email Spam Testing  

GlockApps’ email spam testing can help you discover harmful elements in your emails that could trigger spam filters. This allows you to make necessary adjustments before sending emails.  

Authentication Testing  

GlockApps lets you run authentication checks to confirm everything is appropriately set up and verified for protocols like: 

• SPF

• DKIM

• DMARC

This is crucial because it helps you prove you’re a legitimate, non-spammy sender.  

Inbox Placement Tests  

Where your emails land mostly depends on your email deliverability. But, running inbox placement tests through GlockApps lets you simulate sending to significant email giants ahead of time like: 

• Gmail

• Yahoo

• Outlook 

That way, you can see if your messages will be delivered to the primary inbox or filtered into the spam.  

Real-Time Alerts  

GlockApps also keeps a watchful eye on your deliverability performance. If your sender reputation takes a hit or you accidentally get blacklisted somewhere, you’ll get pinged with a real-time alert.  

3. MXToolbox

Continuing our list, we have MxToolbox next. This tool offers a variety of tests and health checkups to optimize your cold outreach. It provides a massive 45+ auditing feature that prevents your complete email outreach setup. If you feel that this tool requires too much technical understanding, they also offer a managed service where they can do this on your behalf.  

Type

• Testing

• Monitoring & Diagnosis  

Key Features  

Authentication Tests  

It tests:

• DKIM

• DNS

• DMARC

• BIMI

• SPF tests

Saving your emails from being caught by ISPs as someone trying to spam the users.  

Diagnosis  

Checks:

• Header analyzer

• Blocklists

• Blacklisting checks 

Both the blocklist and blacklisting are included in their list of checking, which is rare by tools like this, giving them an edge over others. You can get saved from blacklisting and save your campaigns from blocklisted email addresses.  

Reports  

Email health records in-depth and other critical reports with detailed analytics. Visually appealing and easy-to-understand layouts to study the reports and optimize the campaigns.  

4. MailGenius

MailGenius is also a comprehensive email deliverability service that can help you improve your email deliverability score. What sets MailGenius apart from other tools is its advanced algorithms. Using these algorithms, MailGenius can instantly identify potential issues in your emails that might trigger spam filters or cause them to be flagged as junk. 

That means leveraging MailGenius’s insights can optimize your email content and increase your email deliverability rate.  

Type

Testing  

Key Features  

Optimizes Email Content  

MailGenius scans outgoing emails for spam triggers and provides suggestions for improving the content, subject lines, etc., for better deliverability.  

Monitors Blacklists  

It continuously monitors major spam blacklists/blocklists and alerts you if your IP or domain gets listed, which could impact delivery rates.  

Handles Bounced Emails  

The tool automatically handles bounced emails by removing invalid addresses from your lists to maintain a good sender reputation.  

Inbox Placement Tests  

MailGenius lets you test how popular email service providers like Gmail, Outlook, etc. Filters them, whether in an inbox or spam folder.  

Authenticates Senders  

Along with other features, MailGenius gives you step-by-step instructions on how to set up proper email authentication protocols so that you can prove to major ESPs that you’re a legitimate sender, like: 

• SPF

• DKIM

• DMARC 

HTML Tester  

It also analyzes your email’s HTML content and checks if it matches standards and best practices from: 

• Gmail

• Outlook

• Apple Mail

It also checks how the content will appear on different devices.  

5. Everest -Validity

Everest is a product of Validity. While Validity provides many tools, we must recognize Everest when discussing email deliverability. While all the other tools discuss improving your email deliverability, Everest goes one step further and shares your competitor’s intelligence as well.   The only catch is that this feature is only available in their most premium plan (Enterprise).  

Type

• Testing

• Diagnosis  

Key Features  

Inbox Placement Insights  

Everest provides valuable inbox insights and numbers that help with email deliverability. This feature increases the number of emails reaching inboxes with the analysis and how to cure it.  

Engagement Analytics  

This feature aims to understand user behavior. By using it, users will be able to know how different prospects react to a message and craft future emails according to their behavior. This will increase their engagement rates in emails, which will also increase email deliverability.  

Reputation Monitoring  

As we know, sender reputation monitoring is the top priority for affecting email deliverability. Everest provides analytics to safeguard reputation and cure it immediately when things in your campaign hamper it.  

Design and Content  

When email deliverability is discussed, this aspect should be given more attention. The design and content of your email play a significant role. Everest’s feature analysis of the design and content of your email campaign flags if there is a chance of being marked as spam.  

Email Authentication Monitoring  

Everest also offers one of the main things to monitor: authentication protocols to ensure your email infrastructures remain healthy, like: 

• DKIM

• SPF

• DMARC  

6. Google Postmaster Tools

If you want to gain valuable insights into how your emails are being received and treated by Gmail’s systems, Google Postmaster is a must-have tool.  Using this tool, you can quickly identify potential issues and make informed adjustments to ensure your messages are connecting with recipients’ primary inboxes every time.  

How to Use Google Postmaster Tools to Boost Email Deliverability

Google Postmaster can work as a feedback loop to understand how Gmail views your email traffic and what might affect your email deliverability. When you use Google Postmaster Tools before sending emails, you can see vital metrics like: 

• Spam rates

• Domain reputation

• IP reputation

• Feedback loop results

Knowing about these metrics beforehand can help you discover potential issues affecting how emails are received.  

Type 

• Testing & Diagnosis  

Key Features  

Domain Reputation Tracking  

Google Postmaster is known for providing accurate insights about your domain’s reputation. This information is beneficial for learning how your Gmail emails are perceived regarding spamminess and trustworthiness.  

IP Reputation Monitoring  

Just like domain reputation tracking, you can also track your IP address’s reputation and identify any issues specific to the IP that might affect your email deliverability.  

Spam Rate Data  

This tool shows the percentage of your emails that Gmail users have reported as spam.  

Delivery Errors  

Google Postmaster Tools reports on any delivery issues your emails might encounter, such as blocked messages or failing authentication checks. This can help you solve your deliverability-related problems and prevent future emails from going into the spam folder.  

Authentication-Results  

Last but not least, Google Postmaster’s authentication results show the performance of your email authentication protocols, including: 

• SPF

• DKIM

• DMARC

7. Sendforensics

Sendforensics is next on our list for its advanced features and results. Many already use this tool because of its unlimited free spam test features. All of their plans include integrations, giving users a broad scope. They also offer discounts to non-profit organizations. Now, Let’s look deeper at what this tool has to offer.  

Type

• Testing

• Monitoring  

Key Features  

Deliverability Analysis  

This feature offers email deliverability tests using AI. It covers tests like: 

• Spam checks

• Finding HTML content

• Infrastructure issues

• Detecting non-compliant cookies and more

Sender Reputation Monitoring  

This feature by Sendforensics is one of the critical features as it monitors things like: 

• Sender reputation

• Blacklist

• Engagement metrics

Key metrics harming your email deliverability are tracked here, such as: 

• Complaint rates

• Google reputation

• The domain being marked as spam, and others

Inbox Placement 

Inbox deliverability is crucial to monitoring while performing cold outreach. Using features like inbox placements, tracking success in inbox deliverability becomes easier. 

They provide a seed list that you can use to run inbox placement tests to see how your campaign would work and how much inbox deliverability you would get. This also reveals what needs to be improved.  

Client Preview  

One thing we usually ignore is checking how the message will appear on our prospect’s screen. This feature allows you to optimize content according to how your prospects will see it on their devices, ensuring they see your message in its perfect version.  

8. Folderly

Folderly is the user’s choice for email deliverability due to its features as per your campaigns like: 

• Advanced detection

• In-depth analysis of DNS records

• Content checkups

• Working with certified compliance software

• Customized support

White searching for free email deliverability tools, users come across free deliverability tests offered by Folderly that save them bucks. The list includes tests such as: 

• An email spam checker

• An SPF generator

• A DMARC generator

• An email revenue calculator

Type

• Testing

• Monitoring  

Key Features  

Sender Reputation Maintenance  

With live updates and reporting of aspects hurting your sender’s reputation, Folderly also provides things to reverse any harm done to the reputation.  

Inbox Insights  

For optimized inbox deliverability, Folderly provides inbox insights and tests like: 

• IPs

• DNS records

• Email placements

This ensures better and increased inbox placement scores.  

Content Analysis and Reporting  

Folderly offers content analysis to flag any content that could send your emails to the spam folder, harming the overall campaign’s deliverability.  

9. Spamcheck

SpamCheck by Postmark is a convenient online tool that analyzes your email and provides a score. By simply pasting your code directly onto the website, the system thoroughly analyzes your email and gives a score on a scale of 0 to 5.  

Type

Testing  

Key Features  

Instant Spam Score Analysis  

SpamCheck evaluates your email’s content by analyzing it against ordinary spam filters using the SpamAssassin rules, a popular method for identifying spammy characteristics in emails.  

Detailed Reporting  

It doesn’t just score my emails and provides detailed feedback and suggestions on what I can improve to avoid spam filters.  

Simple Integration  

SpamCheck offers a straightforward API that allows developers to integrate spam score testing directly into email systems or applications, making the process automated and seamless.​  

Real-time Suggestions  

Beyond scoring, SpamCheck highlights specific parts of your email that could trigger spam filters.  

10. Spamhouse

For the uninitiated, Spamhaus is a massive spam-tracking system that allows you to monitor and pinpoint the sources of spam on the Internet. They have developed an incredibly far-reaching network of sensors and data feeds constantly gathering intel on suspect email activities. 

This network collects intel on unsolicited bulk email blasts, phishing scams, malware distribution via email, and other similar activities. But Spamhaus doesn’t just track spam. It also maintains sprawling blocklists loaded with the following: 

• IP addresses

• Domains and networks linked to known spammy culprits.  

Type

Testing  

Key Features  

Reputation Checker  

Spamhaus offers reputation checks, where users can check both IP and domain reputation scores. This feature is crucial to monitor for optimum email deliverability constantly.  

Blocklists (DNSBLs)  

As mentioned earlier, Spamhaus has a long list of blocklists that help you identify and block potential spam sources. This includes listings of: 

• Known spamming IP addresses (SBL)

• Compromised servers may have been hijacked (XBL)

• Even shady malicious activity hotbeds (DBL) domains

Domain Block List (DBL)  

This particular list from Spamhaus keeps tabs on machines and systems that have been compromised.  

Exploits Block List (XBL)  

The Exploits Block List, maintained by Spamhaus, contains compromised machines, such as bots and other malware-infected systems that send spam.  

Spamhaus Query Service (SQS)  

The Query Service is a real-time lookup that cross-checks IP addresses and domains against Spamhaus’s massive database. Before engaging with them, it lets you quickly determine if those sources are potentially associated with spamming shenanigans.  

11. Inboxally

InboxAlly’s primary focus is helping you improve your sender’s reputation and optimize your email delivery strategies so that your email campaigns achieve your desired goals. The tool interacts with your email list and stimulates genuine engagement activities. 

These activities generally include opening your emails, marking them as necessary, and even moving them from the spam folder to the primary inbox. When InboxAlly performs these activities on your behalf, it signals to email service providers’ algorithms that you’re a legitimate sender and your emails are not spam.  

Type

Inbox Placement Checker  

Key Features  

Inbox Placement Improvement  

InboxAlly is a special tool because it uses plenty of different techniques that ultimately help to actively improve the placement of your emails, which improves inbox deliverability.  

Sender Reputation Management  

The Sender Reputation Management feature is quite useful, especially if you want to demonstrate positive engagement metrics in the eyes of popular email service providers.  

Real-Time Monitoring  

In addition to sender reputation management, InboxAlly has a real-time monitoring feature that provides detailed insights into your email campaign’s performance. This feature tells you how many emails reach the primary inbox and how engagement is simulated.  

Detailed Reporting  

InboxAlly also includes detailed reporting to help you improve the effectiveness of your email strategies and optimize your outreach campaigns.  

12. UnSpam.email

Unspam.email is more like those email testing tools, which you can use to test your email deliverability as a part of deliverability services. That means you can find out if your emails will likely be marked as spam or successfully reach primary inboxes, allowing you to make necessary adjustments to improve deliverability.  

Type

• Testing

• Inbox Placement Checker  

Key Features  

Content Analysis  

In addition to spam scoring, UnSpam thoroughly analyzes your emails' written content and composition. It looks for risky word choices, overly promotional language, or other potential red flags that could trigger spam traps. If it catches anything questionable, it’ll suggest some tweaks to improve your chances of inbox deliverability.  

Spam Score Evaluation  

The spam score evaluation feature of UnSpam.email allows you to analyze your emails and calculate a spam score for them. As you can already guess, this spam score can help you understand how likely ordinary email filters will flag your email as spam.  

Blacklist Monitoring  

The blacklist monitoring feature helps you make sure your sending IP address or domain hasn’t accidentally gotten blacklisted anywhere. In other words, UnSpam gives you visibility into your blacklist status so you can get ahead of any potential blocking issues.  

Email Authentication Checks  

Another great thing about the UnSpam.email tool is that you can check whether your authentication protocols are correctly configured.  

Inbox Placement  

Inbox deliverability is crucial to great email deliverability. It provides features like AI eye-tracking heatmaps, email inbox previews for all devices, and an unspam score to ensure safety before sending emails.  

13. Mailchecker

We wanted to add Mailcheker, a small tool for checking and testing, for users who do not wish to have full-fledged email deliverability solutions but rather just a few tests. 

Well, it’s not a tiny tool. It provides an excellent list of tests and reports based on email address analysis, and the best email deliverability tools expect more crucial data points. It includes: 

• Blacklist checking

• Authentication reports status

• Spam words flagging

Type

• Testing

• Inbox Placement Checker  

Key Features  

Technical Issue Flagging  

Using your email address, Mailchecker can flag essential issues you face and prevent your emails from going into the spam folder.  

Summary checks  

This check section will help you analyze your email health quickly. It also checks as a summary (and complete, if needed). These include: 

• Body checks

• Header checks

• HTML checks

• ISP

• DNS settings  

Authentication Protocols Check  

The header check provides details regarding your protocols like: 

• DKIM

• SPF

• DMARC

It shows their current status, and if anything is not working, it provides additional information that could have caused it.  

14. Saleshandy

Saleshandy is a one-stop solution as an automated cold email outreach tool. With its advanced features, it makes sure your emails always reach your prospects’ inboxes. All email deliverability is mainly targeted at ensuring the message reaches the prospects; that is exactly what Saleshandy will do for you.  

Type

• Complete Cold Outreach

• Deliverability Tool  

Key Features  

Email Warmup  

You can warm up unlimited email accounts with Saleshandy. Scaling is effortless and convenient using this tool. 

A properly warmed-up email account is more secure, as ISPs recognize it as being used by real people due to the gradual increase in communication activity. This builds trust and improves deliverability.  

Sequence Score  

Preventive steps are always preferred. For the same reason, you can use and check the feature sequence score beforehand, and if the score is less than the advised limit, you can take preventive steps. This feature could correct anything, causing the lower sequence score. 

Using it gives you certainty before sending the campaign that your sender’s reputation and email deliverability will be safe. Details are measured and scored to detect potential issues, such as:  

• Writing score

• Sequence setup score

• Email setup

Sender Rotation  

Sending multiple emails using a single email address could easily flag your domain as spam. To safeguard against this situation, Saleshandy offers a fantastic feature: sender rotation. 

This feature randomly rotates the email domains attached to your account and sends emails. This allows you to send the same message to a large crowd without getting flagged.  

15. Mailtrap

Mailtrap is an Email Delivery Platform for businesses and individuals to test, send, and control the performance of their email infrastructure. It has two solutions: 

• Email Testing

• Email Sending

Email Testing is an Email Sandbox inspects and debugs emails in a safe staging environment before sending them to recipients. It helps you improve deliverability with its Spam Analysis. Spam Report provides a general score with descriptions for any component that could be considered spammy by ISPs. Meanwhile, Blacklists Report shows you if any significant block lists have blocklisted my IP.  

Mailtrap Email Testing Spam Analysis  

Email Sending is an email infrastructure designed for high deliverability rates. It combines SMTP and RESTful API solutions for easy and quick integration. Email Sending starts taking care of your deliverability from day one. When you sign up and add my sending domain, it asks me to verify it using ready-made SPF, DKIM, and DMARC records. 

Only verified domains can send emails to protect Mailtrap’s shared IPs from spam abuse.   Moreover, Email Sending covers almost all the criteria we mentioned above. Actionable analytics with drill-down reports and helicopter-view dashboards help users monitor the performance of their infrastructure at all times. 

Proactive Email Deliverability Management with Mailtrap: Key Benefits and Limitations

Email Sending monitors deliverability through critical alerts that notify you if any unexpected sending issues occur. You can also access deliverability experts who are ready to assist you with any questions.  So, Mailtrap allows you to take proactive measures in staging and control deliverability in production. 

Currently, Mailtrap allows you to send only transactional emails. Marketing emails will be available soon.  

Key features

• Helicopter-view dashboards  

• Drill-down email reports for mailbox providers and email categories  

• Detailed logs and event history up to 60 days  

• Email body preview after the email is sent  

• Weekly reports with week-on-week comparison  

• Critical alerts if numbers suddenly drop  

• API and SMTP service for smooth and easy integration  

• Spam analysis and HTML check  

• Fake SMTP server for email testing  

• Webhooks for event tracking  

• Official SDKs for popular programming languages  

Pros 

End-to-end sending solution: Mailtrap offers tools and features to help users manage and deliver emails effectively, including:

• Testing

• Sending

• Tracking

Highly responsive customer support: The Mailtrap team is committed to delivering exceptional service through guidance and support to help users get the most out of the platform.  

Deliverability experts: Mailtrap has highly skilled team members ready to address urgent issues immediately.  

Secure and user-friendly setup and onboarding: Mailtrap runs security checks in the background, so users only need to follow the in-app wizard to complete the domain setup.  

SMTP and APIs compatible with Sendgrid, Mailgun, and Mandrill: Mailtrap supports standard SMTP protocol and has compatible APIs, which saves time and makes the switch to Mailtrap easier.  

Dedicated IP is included in higher paid plans: Starting from the Business (100K+ emails/month) plan, users can access a dedicated IP without additional charges.  

16. MailerSend

MailerSend is a transactional email and SMS delivery platform built for developers and designed with non-technical teams in mind, allowing their transactional messaging to: 

• Design

• Create

• Manage  

MailerSend has flexible deployment options, including:

• Email API

• SMTP relay

• SMS API

This tool has everything you need to scale your email sending as your business grows with features such as: 

• Inbound routing

• Email verification

• Advanced analytics

Enhancing Email Deliverability with MailerSend's Suppression and Verification Features

Regarding deliverability features, MailerSend has suppression management that allows you to remove hard bounces and unsubscribes from your contacts list. Their email verification feature makes it easy to clean the contact lists before emails are sent. In addition, MailerSend authenticates your domains with SPF and DKIM.  

Key Features

Regularly updated official SDKs  

SMS API for sending high-volume transactional SMS  

Inbound routing for parsing incoming messages to your app  

Inbuilt email verification tool to reduce bounce rates  

Email template builders: 

• HTML

• Drag & Drop

• Rich-Text)

User management with five user roles and the ability to create new ones  

Bulk emailing endpoint to optimize your sendings for improved delivery  

Integration with popular platforms, including: 

• WordPress

• WooCommerce

• Zapier

• Make  

Webhooks for real-time notifications triggered by email activity  

Email split testing for up to 5 versions of a template  

Email analytics with a wide range of metrics to keep track of important KPIs  

Pros 

• Award-winning support: MailerSend is known for its responsive customer support (24/7 email support and live chat).  

• Deliverability expertise: MailerSend has a dedicated deliverability team backed by years of experience in both marketing and transactional email.  

• Transactional SMS: MailerSend offers the ability to add transactional text messaging to the mix, providing customers with more communication options.  

• Multiple options for creating templates: The three email editors allow users of all technical abilities to contribute to email content and design.  

Simple pricing 

MailerSend offers three straightforward plans with no hidden costs.  

17. GetResponse

GetResponse is an all-in-one marketing platform that offers: 

• Email marketing

• Marketing automation

• Sales funnel-building capabilities

It allows: 

• Businesses to create and send professional-looking emails

• Automate their marketing effort

• Design and build landing pages for their products or services

Boosting Credibility and Inbox Placement with GetResponse's Deliverability Features

GetResponse has deliverability features to ensure your marketing campaigns reach inboxes. You can create custom business email addresses with your domains for more credibility. All domains are authenticated with automated DKIM, DMARC, and SPF configurations. GetResponse has a built-in spam check to avoid spam filters.  

Key Features 

• Custom business email addresses with your domain  

• Marketing automation workflows for customer journeys  

• Landing page builder  

• Automated webinars  

• Integrations with popular platforms and tools  

• Lead scoring and nurturing  

• A/B testing  

Pros 

Advanced automation features: GetResponse offers advanced automation features to help businesses streamline their marketing efforts, such as: 

• Automation workflows

• Lead scoring

• Nurture campaigns.  

User-friendly interface: GetResponse’s user-friendly interface makes it easy for businesses to create and send professional-looking emails and design landing pages without technical expertise.  

Wide range of integrations: GetResponse integrates with various e-commerce platforms and other popular marketing tools.  

Good deliverability rates for emails: GetResponse has a good reputation for delivering emails to subscribers’ inboxs, increasing the chances that your target audience will see your messages.  

18. InboxAlly  

InboxAlly is an excellent email deliverability tool for getting out of the inbox and improving open rates. With InboxAlly, you can send bulk emails without having the fear of landing them in the spam folder. Besides, the tool boosts your open rates. Some InboxAlly clients have reported that their open rates have doubled in under 2 weeks of using the tool. 

InboxAlly teaches email service providers not to place their emails into the spam folder. 

There are multiple use cases for InboxAlly:  

• Get out of the spam  

• Warm up domain/IP address  

• Fix a damaged sender domain  

• Boost your sender’s reputation  

• Moving to the new ESP  

• Sending emails that belong to essential email campaigns  

• Fix self-hosted email platform deliverability damaged by spammers  

• These and many more use cases help you achieve 100% deliverability.

InboxAlly is an excellent tool for: 

• Mailing list owners

• Agencies

• Deliverability experts

• Email service providers

Key Features  

• Real-time engagement monitoring  

• Track the progress of getting out of the spam folder  

• Overview of all the broadcasts sent  

• Works with any email service  

• Improve deliverability and reputation of any IP/domain on any platform  

• Schedule mails  

• Enterprise-level plans are available  

19. QuickMail Auto Warmer

QuickMail Autom Warmer is an email deliverability tool that warms up the inbox. This tool helps you avoid spam and see in-depth reports and analytics regarding where your emails are landing. This tool offers a great way to see where your emails land to improve their deliverability. The Auto Warmer is the only free email warmup tool on this list. Yet, it’s nearly as capable as some more costly options.  

Building Sender Trust with QuickMail Auto Warmer: How Engagement Boosts Deliverability

If you are looking for a cheap alternative to email deliverability, consider QuickMail Auto Warmer.  As stated earlier, service providers must trust you to land emails in the inbox instead of the spam folder. The best way to build trust in the eyes of email service providers is to show engagement. In other words, if people open and reply to your emails, it’s a sign of things to come.  

Leveraging Auto Warmer Networks and Deliverability Reports for Optimal Campaign Readiness

The Auto Warmer tool forms a network of other people using the Auto Warmer tool. It sends emails to this network and automatically opens/responds to them. This way, your domain will be seen as more trustworthy in the eyes of ESPs. 

Besides building trust, the Auto Warmer tool crafts detailed reports on where your emails land. Before starting your email campaign, ensure your deliverability reports show a green flag. 

Key Features  

• Warm up your inbox by opening and replying to emails  

• Get insightful reports about where your emails land  

• Auto Warmer is a part of a cold email platform for solid email campaigns.  

20. Sender Score

Sender Score is a tool whose name tells everything. This tool gives an email sender a score for the email sent. This score describes the creditability of the sender domain. With the Sender Score, you can analyze the emails and make changes and decisions to improve their deliverability. 

The score runs from 0 to 100. The closer you are to 100, the unlikelier your emails will end up in the spam folder. The score is split as follows:  

• 0–70: Your sender’s credibility requires improvement. Your message is likely to land in the spam folder.  

• 70–80: This is a good score. Your emails probably land in the primary inbox. Just to be safe, there are still some improvements to make.  

• 80+: Excellent score. With this reputation level, you can make a few improvements to increase the chances of landing on the primary inbox.  

This tool is entirely free to use!  

21. NeverBounce 

NeverBounce is a slightly different email deliverability tool in this list, focusing on sending emails to the correct addresses. If you are using a poorly curated list of emails, some wrong email addresses are on the list. Sending emails to invalid addresses is not a great idea because no one will ever read them. 

This is where NeverBounce helps! This tool cleans up your bulky mailing lists. NeverBounce removes invalid and suspicious email addresses from the list. The tool also removes duplicates from the lists, so you don’t send emails twice to the same address.  

Streamlining Email List Management with NeverBounce: Instant Bounce Analysis and Seamless Integrations

NeverBounce provides you with an excellent instant bounce analysis. This report helps you understand the performance of your mail campaigns no matter how big of a list of recipients you are sending emails to. 

Also, the tool integrates well with other platforms. There are 80+ supported integrations. This makes it easy to clean the mailing lists right when you add them to the CRM system.  

22.  Snov.io

Snov.io is a multifunctional cold outreach platform that helps user grow their business with a complete sales toolbox. They recently launched an Email Warm-Up tool. It can fix email deliverability issues and help users build or recover their sender reputation. That way, emails will land in inboxes instead of spam or promotions folders.   

Snov.io Email Warm-up tool 

Snov.io also has an email verifier to reduce bounce rates and avoid sending emails to spam traps.  

Key features 

• Fully automated  

• Efficient warm-up strategies to cover individual needs  

• AI-powered same-thread conversations for best warm-up results  

• Well-organized inbox  

• Easy and quick setup  

Pros

• Easy set-up. Snov.io Email Warm-Up can be set up in 2 minutes by connecting an email account.  

• Availability to all users. The tool is available to all users regardless of their plan  

• There are no distractions in your inbox. All warm-up emails are automatically organized in a separate folder, which doesn’t distract users’ attention from emails sent and received outside the warm-up.  

• Customization opportunities. You can use your email template and choose the custom parameters for the warm-up.  

• 24/7 support and live chat, which helps users solve issues or get answers to all the questions.  

23. Klenty

Klenty is a sales engagement platform for executing multi-channel outreach campaigns. It allows users to create and manage: 

• Personalized email campaigns

• Schedule follow-ups

• Track the team’s performance

Klenty leverages deep personalization that goes beyond the first name. In terms of deliverability, Klenty reduces bounce rates with email validation tools. It has a custom tracking domain to protect your sending domain from being affected by spam filters. Klenty users can also limit daily sending volume and gradually increase it as their reputation improves. This tool sends your emails randomly to mimic human behavior.  

Key features 

• A/B testing to optimize email engagement  

• Scheduled delivery for sending emails when they are more likely to be seen  

• Follow-up thread to manage conversations in one place  

• Email previews to ensure your emails are professional  

• Ready-made templates  

• The ability to prioritize emails that will be sent every day  

• Seamless integration with LinkedIn for prospecting and engagement  

• Integration with third-party tools and platforms  

Pros 

• Useful reports: Klenty generates daily reports to provide insight into essential email metrics.  

• Easy to use: Klenty integrates easily with various platforms. The UI is straightforward and doesn’t require extensive onboarding.  

• Cadences: Klenty focuses on the cadences, making it easier to achieve results through cold outreach.  

• Inbox: Connecting your email account lets you view received emails directly from the platform without returning to your email client.  

24. Mailshake 

Mailshake is another sales engagement platform that streamlines email outreach and sales communication. It automates: 

• Outreach emails

• Provides visibility into all lead activity

• It helps you improve your email deliverability

Mailshake has an email warm-up tool that gradually increases sending volume and automatically takes actions with spam, such as: 

• Replying

• Opening

• Removing 

It checks your domain to ensure authentication protocols are correctly set up. Mailshake has a robust email validation feature to help clean up your contact lists.  

Key features 

Outreach campaigns with automated follow-ups  

Mail-merge for deeper personalization  

Customizable sending schedule  

Ready-made email templates to build sequences quickly  

Analytics with data on: 

• Reply rates

• Open rate

• Clicks  

Third-party integrations with CRMs and social media channels 
Email deliverability support through training  

Pros

• Responsive customer support: Mailshake always provides in-depth answers to customers’ queries.  

• Straightforward interface: Mailshake is easy to use, even for people who don’t have prior experience with similar platforms.  

• Contact export: Contact lists are easy to export to other platforms.  

• Focus on education: Mailshake creates multiple opportunities to educate its users and help them make the most out of the platform.  

25. SendGrid 

SendGrid facilitates email testing by providing tools for pre-send diagnostics, such as A/B testing and email validation testing. These tools allow you to preview and validate emails across various clients and devices. This helps identify potential rendering issues and ensures your emails appear correctly in different inboxes.  

Highlights 

• Inbox Rendering Test: Preview how an email will be displayed across a curated selection of inbox providers and devices, ensuring consistent presentation and design.  

• Spam Test: Check your email against leading consumer (B2C) and enterprise (B2B) spam filters.  

• Link Validation Test: To verify all hyperlinks within: 

• An email

• Checking for validity

• Redirects

• Domain reputation

• Essential metadata like title text

26.  Email on acid

Email on Acid assures that your email campaigns will be perfect before reaching your live audience. It is a comprehensive testing platform known for its extensive email client compatibility checks.  

It's precious for businesses that must ensure their emails are pixel-perfect across many email clients. This reduces the risk of rendering issues and minimizes inbox blindspots that could affect engagement.  

Highlights

• Cross-Client Testing: Preview emails in over 70 clients to ensure broad compatibility.  

• Code Analysis: Identify and fix coding issues that could disrupt email rendering.  

• Pre-Send Checklist: Run a comprehensive checklist to catch common email mistakes before sending.  

• Accessibility Testing: Ensure your emails are accessible to all users, including those with disabilities.  

27. Clearout

Clearout is one of the most trusted email verification tools known for its speed and 99% data accuracy. Its AI email verification system performs 20+ real-time checks to help you filter all bad emails, including: 

• Gibberish

• Disposable

• Spam-trap

• Blacklist

• Invalid

• Typos

• Catch-alls and more

Maximizing Deliverability with AI-Driven Insights and Guaranteed Deliverables

The “guaranteed deliverables” feature marks the email addresses most likely to receive emails without hampering your reputation or bouncing back, reducing your bounce rate to 0-3%.  You also get AI insights into optimizing your campaigns and data enrichment features that can help you build and maintain quality email lists.  

Highlights

• AI-powered Email Verification: Offers 99% data accuracy and insights to improve deliverability.  

• Bulk Verification: This is for uploading or importing email lists for real-time validation.  

• On-form Verification: Validating email addresses at the entry-level ensures that no bad email users are entering your database.  

• Advanced Catch-All Resolver: Identifies and resolves catch-all domains, which could lead to bounces.  

• Data Enrichment: Build pre-verified email lists using email finder, in-app prospecting, and extension for data finding.  

• API, JS-widget, Integrations: Seamlessly integrate with your existing CRM, forms, and sales or marketing platforms with Clearout.  

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How Do I Maximize Email Deliverability?

Authenticate Your Email Domain

Impersonation is not a form of flattery in the email world–it’s one of the quickest ways to tank your sender’s reputation. Suppose you are not enabling Sender Policy Framework (SPF) and Domain Keys Identified Mail (DKIM). 

In that case, you risk falling victim to email spoofing (somebody taking control of your email domain) and, as a result, experiencing poor delivery rates. Authenticating your email with SPF and DKIM proves to the ISPs that you are who you say you are and are worthy to send email.

Maintain Proper IP Allocation

As your email program continues to grow, it’s essential to remember that you will need the proper email infrastructure as you scale. Once you reach 25,000 daily emails, you will want to send them to a dedicated IP address.

 When you add a dedicated IP address, you’ll have to properly warm it up before sending it to your entire list so that you gain trust with the ISPs that you are sending wanted email. Don’t just keep adding IPs to avoid penalties. ISPs are more intelligent than that and will block an entire IP pool if they suspect this is what you’re doing.

Perfect the Opt-In Process

How you collect email addresses plays a significant role in your deliverability rates. An optimized opt-in process ensures your email list is full of engaged users. If you are sending emails to people who weren’t aware or didn’t agree to receive messages from you, they will mark your emails as spam, and the ISPs will think you’re spamming everyone on your list (even those on your email list that want to receive your email!). 

We recommend using double opt-in, which involves two verifications for the user and proves far more successful in cultivating an engaged email list.

Write Subject Lines of the Non-Spammy Variety

Your subject lines are crucial content determining whether a user opens your emails. Although ISPs continue to become more sophisticated in their filtering systems and particular catchphrases won’t necessarily place you in the spam folder automatically, it’s wise to avoid using common phrases. 

Some of these phrases include: 

• Eliminate your debt 

• Risk-free FREE!!! 

There is no absolute rule or words that, if avoided, will guarantee you a place in the inbox. And many legitimate emails might include the words above. But when you’re writing your subject lines, focus on the genuine value of the message without sounding pushy or salesy.

Provide a Preference Center

Once your recipients have agreed to receive emails from you, provide a preference center to decide just how frequently they want to receive emails from your brand. Doing so helps put your recipients in control and keeps them happy. This happiness generally translates to better engagement (which the ISPs notice).

Clean Up Your List Regularly

Don’t let your ego get in the way of your email deliverability. The longer you keep inactive and unengaged users on your email list, the more damage you risk to your reputation and deliverability rates. 

Providing a clear and easy way for your users to unsubscribe from my emails helps automate the process. Still, it’s also important to scrub your list on a regular basis so that it is healthy and only includes people who engage with your emails.

Avoid Spam Traps

Spam traps are email addresses established by ISPs and community organizations to catch spammers “in the act” of sending unwanted emails. If a sender sends an email to a spam trap, it is flagged and put on a deny list. 

Getting yourself off a deny list is incredibly challenging, so it’s best to never end up on one in the first place. Email marketers can avoid spam traps by keeping a clean list of engaged users and never purchasing an email list.

Send Email That People Love

When trying to improve your email deliverability, you have to please two parties:

• The ISPs

• Your recipients

But if you please the latter, the former will already be taken care of. ISPs protect the end-user, and if they indicate they are happy, then the ISPs will be pleased with your sending and keep placing your email in the inbox. Above all, if your recipients enjoy and derive value from your email, they will interact with your messages.

Monitor Your Email Metrics

Monitor your email performance metrics to maintain and improve your deliverability rates. 

Here's why it matters: 

• Identify issues early: Regular monitoring helps you spot potential deliverability problems before they become critical. 

• Track improvements: Analyzing your metrics over time shows the impact of your deliverability efforts. 

• Optimize your strategy: Use data-driven insights to refine your email marketing approach. 

• Important email metrics to monitor 

• Bounce rate: High bounce rates can harm your sender’s reputation. Monitor both hard and soft bounces. 

• Spam complaint rate: If this rises, it's a red flag that your content or sending practices need adjustment. 

• Open rates and click-through rates: While not direct deliverability metrics, these engagement signals influence how ISPs view your emails. 

• Inbox placement rate: This tells you what percentage of your emails reach the inbox.

Implement a Sunset Policy

A sunset policy is a strategic approach to managing inactive subscribers, which can significantly impact your email deliverability. Regularly removing unengaged subscribers keeps your list healthy and responsive. ISPs view consistent sending to inactive addresses as a red flag, which can harm your reputation. Plus, your overall engagement metrics will likely improve by focusing on active subscribers. 

How to implement a sunset policy: 

• Define inactivity: Determine what constitutes an inactive subscriber for your business (e.g., no opens or clicks in 6 months). 

• Create a re-engagement campaign: Before removing inactive subscribers, try to win them back with a targeted campaign. 

• Set up an automated process: Use email automation to tag and manage inactive subscribers over time. 

• Remove with care: If re-engagement fails, remove inactive subscribers from your main list, but consider keeping them on a separate suppression list. A smaller, more engaged list is far more valuable than an extensive list of unresponsive subscribers.

Start Buying Domains Now and Setup Your Email Infrastructure Today

Inframail revolutionizes cold email infrastructure with unlimited inboxes at a single flat rate. Inframail has: 

• Microsoft-backed deliverability

• Dedicated IP addresses

• Automated technical setup, 

 It scales its cold email outreach efforts efficiently: 

• Agencies

• Recruiters

• Sales development representatives

Traditional providers charge per inbox while you wrestle with technical configurations. Inframail streamlines the entire process. Start buying domains now and set up your email infrastructure today with our email infrastructure tool. 

Automated Setup for SPF, DKIM, and DMARC

With Inframails cold email infrastructure, you never have to worry about setting up these records manually: 

• SPF

• DKIM

• DMARC 

We automate the entire process, preparing your email infrastructure to send cold emails in no time. Why does this matter? These technical configurations help validate your emails and improve deliverability. The quicker you get these setups configured, the faster you can reach more prospects. 

Dedicated Email Servers for Each User

Inframail provides dedicated email servers for each user to ensure you always have the resources you need to scale your cold email outreach. Unlike traditional providers that require you to share resources with other users, Inframail’s cold email infrastructure setup ensures you have everything you need to stay under the radar, so you can send thousands of emails with little chance of getting caught. 

16-Hour Daily Priority Support

Inframail provides robust support to resolve any issues you might encounter while using our cold email infrastructure. We offer 16-hour daily priority support to all users so you can quickly reach your goals.

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