Email Health Report Alternatives: Top 10 Email Testing Tools in 2025

Mailtrap is a simple mail transfer protocol (SMTP) testing software that enables users to examine and fix their email samples before forwarding them to clients. The software features a dedicated environment for its user’s email tests, allowing them to make sure that the contents within the sent emails are perfect. It runs continuous and detailed checks through the users’ domain, providing appropriate guidance on how to bypass spam filters. Organisations get to test and fix each part of their message within Mailtrap. They can even inspect HTML to ensure that the generated mails work with the most popular email clients. Team members can share and discuss multiple ideas with each other. They can also invite customers to their inbox to demonstrate the progress levels of a particular project. Further, users can also separate projects by generating new inboxes, in just two clicks. Coming to the security features, Mailtrap arrives with a secured and encrypted server, ensuring top-graded data privacy.

testmail.app is an automated email testing app that helps businesses to test new users’ signups, transactional emails, spam scores, and more. To test new users’ signups, it verifies emails, passwords sign-ins, etc. further, testmail.app evaluates transactional and drip emails as well. It also checks the delivery and spam scores, to test whether the email has been received or not. An inbuilt API within the same helps with parse, receive, spam-test and index of the customer’s emails for easy retrieval, eliminating chances of finding any email in the spam folder. It offers to use JSON API or the powerful Graph API to query the emails. Businesses also get to use the HTTP or GraphQL client of their choice in any language or environment including CI/CD pipelines. testmail.app even facilitates easy collaboration process among multiple team members to test emails, monitor usage and manage projects.

Introducing GetTestMail, the definitive watertight email service for developers - it will transform the way they write tests! GetTestMail’s powerful libraries enable them to write tests completely securely and safeguard against data loss. Their innovative technology takes the worry out of developing, putting the focus back on the creative aspects of software testing. Now, thanks to GetTestMail, they can be sure their projects are always protected. For every project you undertake, they’ll want a reliable service that they can count on; something they can trust with their valuable data and assets. GetTestMail is the perfect choice because it is designed to endure the most extreme conditions. By using GetTestMail, they can worry less about data integrity and focus more on meeting deadlines. They’ve spent countless hours perfecting this product so that they can rely on it to provide watertight security 100% of the time. No more risking data losses; GetTestMail is here to give them the peace of mind they need as a developer. Don’t miss out on this industry-leading email service - sign up now and let GetTestMail take care of all their watertight email needs.

MailSlurp is a smart and advanced solution that enables testing of the most important aspects of email sending. It allows the user to programmatically test transactional emails and with more efficiency. MailSlurp allows you to test fundamental user engagement by sending actual emails to real email addresses to your application. You can conduct end-to-end email testing to identify any issues and ensure that the email is sent to the intended recipient. This tool can further be used to test entire email functionality, including sending and receiving emails over REST from randomly created inboxes. Users get the option to create unlimited email accounts with auto-forwarding, web hooks, and routing options that can be configured in code or online. You can send contact groups template emails and track the number of times an email has been opened using actual email addresses, test user authentication, forgotten passwords, email verification, and more for your application. You can receive emails in code, test user sign-up processes, store new contacts and attachments to Google Drive, and more using the REST API, developer SDKs, and Zapier integrations.

Octal is an innovative email testing solution meticulously designed to enhance workflow efficiency while maintaining an organized inbox. By enabling users to generate temporary inboxes instantly, Octal simplifies the email testing process, whether for signup flows, password resets, notifications, or marketing campaigns. The platform ensures that every email reaches its intended destination accurately, eliminating the distractions of spam, advertisements, and plus addressing. Moreover, Octal prioritizes security by guaranteeing the receipt of emails while preventing issues such as bounces or misdirected messages. Its scalability allows for the generation of inboxes at any volume without compromising reliability. Additionally, Octal fosters seamless collaboration, empowering teams to work together effortlessly on various projects. For professionals seeking a dependable, scalable, and user-friendly email testing solution, Octal stands out as the premier choice, enabling users to concentrate on their campaigns with assurance while Octal handles the intricacies of email management.

EmailChecky is a tool which helps you to maximise your performance with emails. The users simply need to send the mail to the desired email address and the software would come up with valuable suggestions right away for making any changes or improvements. It is integrated with various advanced functions which help to analyse the contextual and technical part of the email. The tool makes sure that your emails are ready to be sent to the masses while aiming at enhancing the overall communication experience. A small correction can make a huge improvement in the deliverability of an email campaign. It detects errors and provides instructions and tips for necessary corrections that need to be done. With its anti-spam feature, EmailChecky minimises the risks of the emails getting stuck in the spam folder. The worst part about emails is the presence of any broken links, which not only annoys the readers but also leads to loss of money associated with email marketing. The software checks whether there are any broken links present, and reports and repairs them immediately. It is important to know that the opening rate of the email and the revenue of your business is directly proportional to each other. There are many minor mistakes present in emails that are generally overlooked by professionals too. This software helps to detect these problems and provides measures to resolve them, thereby ensuring that your clients and target audience receive error-free and engaging emails.

Emailinspector is a real-time email verifier tool for email marketers to bulk email list verification and optimize email deliverability. And it provides a familiar features like Minimize Bouncing, Disposable Email Checker, Catch-All Domain Checker and much more.

Mailnest is a robust email testing tool that enables IT teams and developers, to test out the quality of the generated emails and improve them accordingly. The tool allows users to capture all of their test emails in a single place. Besides helping to avoid accidental forwarding of test emails to real customers. With Mailnest, IT teams can set up a virtual SMTP server in 2 minutes. They can even evaluate multiple scenarios without creating separate IDs or clearing databases. Developers are also offered access to the real-time source code of the generated emails, where they get to check if everything is up to the mark or not. Also, the tool comes with an error mode that can be used to emulate various error scenarios. Mailnest takes care of the entire email testing process so that users can invest their complete focus on other relevant tasks. Thus saving out a lot of time and effort on the go.

Email Heatmaps software is a platform used to analyze the results of your email marketing campaigns with clicks. The software offers tools to connect your email marketing platform and compare two campaigns side-by-side. It connects with Mailchimp, Active Campaign, GetResponse, and more. Marketers, Small and Medium companies make use of the software.

Introducing Resend, the revolutionary API that will transform the way to connect with the customers. Gone are the days when carefully crafted emails end up lost in the vast abyss of spam folders. With Resend, customer can finally guarantee that the messages will reach the right people, at the right time, every single time. Designed specifically for businesses that understand the importance of impactful email communication, Resend is the ultimate solution for building, testing, and delivering transactional emails at scale. Whether the customer is sending order confirmations, password resets, or important updates, Resend ensures that the messages not only reach their intended recipients, but also make a lasting impression. So, what sets Resend apart from the countless other email APIs out there? Well, first and foremost, it understands the value of connecting with humans, rather than getting caught in a never-ending battle with spam filters. With its intelligent algorithms and advanced analytics, Resend optimizes the emails to bypass those pesky filters and land directly in the customers' primary inboxes.

MailSnag is a free plugin that aims to let you send out test emails, but without using your customers’ email addresses, which makes them think that you are spamming them. MailSnag provides false SMTP server credentials, which you can then use to send your development or staging emails to. MailSnag also provides them with different inboxes and authentication data for every mailbox that you choose to create. To change your current test email application to MailSnag’s server, them can use one of its many integrations. MailSnag’s allows them to inspect and capture any emails that have been sent out during the development period using its SMTP server. It also allows them to debug application generated emails, as well as view embedded content, raw data, and attachments. MailSnag currently supports a wide range of languages for their emails, including English, French, Spanish, and Portuguese.

Email Preview Service is an email testing platform that enables you to preview your emails before sending them for improved email analysis, testing of your design, and improving of your email campaign efficiency. It assists you in boosting the engagement of your recipients by giving you a preview of your email before it goes to your recipient's inbox. With Email Preview Service, you can test your email design and determine what needs to be addressed. With the platform’s white-label API, you can get a superb collection of tools for your project to increase the quality of your emails and, as a result, your conversion rates. You can undertake tests by forwarding emails to a specially constructed email account, or by connecting the API to your app. You can gain insights into the finer aspects of your email campaign, beginning with the open-duration in seconds, the email client used, and the actual geo-location. Additionally, you can compare the results of multiple tests sent via several email providers to find which one offers the highest response rate and use that channel for marketing.

AMP Emails can help them to insert forms, calendars, cart, widgets, and more inside emails. Get such an AMP email in their inbox right away. AMP for email is an open framework developed by Google to create a smooth website-like feel within the email to improve the user experience. With AMP for email, people can send emails with AMP components to make it interactive and engaging by allowing readers to take actions like filling out a form or booking a meeting within the email itself. And these emails are dynamic, so the content that people submit in these forms or surveys will be updated in real-time.

Inbox Pirates is an free email preview tool to view HTML emails in notification bars, variable screen-sizes and devices. The software offers tools to test emails on their everyday workflows. It integrates with Google Workspace, MailChimp, Hubspot, and more.

Litmus is an intuitive email marketing tool that aims to help marketers perform at their best. The platform offers a variety of simple-to-use tools, that a team needs to create high-converting emails and get the best out of their marketing strategies. With Litmus, teams get to discuss, remark and consolidate feedback in one place. Moreover, they can also streamline dozens of time-consuming pre-send chores into a single, automated checklist. The software also helps users to continue subject lines check, run spam tests, and even preview emails on more than 90 apps. Overall, the software helps businesses to improve their personalisation and segmentation facilities in real-time. They can apply insights accordingly, generate emails with high conversion rates and eliminate manual proceedings by integrating ESP. Companies working with Litmus also get access to active integration facilities with Chrome, Slack, Trello, HubSpot, SAP and OneDrive.

With easymailing, can start now and increase conversions for free! The Customer will be able to benefit from all the advanced features our tool has to offer, such as personalized support in Spanish, segmentation capabilities, dynamic content optimization, A/B testing capabilities and more. Best of all, our drag & drop interface makes it incredibly easy to customize emails - no coding required!  And with real-time tracking features like open rates & click-throughs analytics, can monitor the impact of the customers campaigns in detail. Plus, this robust reporting tools gives the comprehensive insights into the subscriber engagement so know exactly what works for the audience. 

GlockApps is an email deliverability and spam testing app that helps companies maximise their inbox deliverability rates in real-time. The app lets users know issues with the email if there is any, and forward the right mail. Moreover, an intuitive DMARC analytics feature within the same helps to detect and resolve any malicious element from the emails convincingly. GlockApps also reduces the bounce rates of individual emails to ensure that the maximum number of emails get delivered to the target audience. Users can also monitor, separate, reject and capture various emails, with spoofing or phishing content in them. Businesses can see reports about any potential delivery issue that may emerge with outgoing messages. The app allows users to audit their domain and IP against more than 50 industry blacklists. Users can also run automatic tests and receive notifications in case they found any issue with the generated emails.

Email marketing is a great way to grow revenue, but this is important to tailor campaigns to customer's profiles. To make it even easier, pre-built email templates can be used for different events and customer journeys to quickly create marketing campaigns. With the right insights and data, user can continually adjust these campaigns to maximize performance. A/B testing on emails is a great way to learn what content resonates with the customer base. With the right set up, email marketing can be a powerful tool to help grow business.

Mailosaur is an email-testing tool that enables the users to test emails for websites, applications, and products of any type. You can build and test products, automate email tests that work with Cypress and Selenium frameworks with Mailosaur. Mailosaur enables development team and QA teams to capture, test and analyze SMS messages and emails with their existing language or test framework. You can catch bugs, pinpoint defects in workflow like password resets before release or account activation and do manual testing with Mailosaur’s advanced tools and features. Users can make use of a brand new emailing address for every project, test run, or group member to merge the outcome into the existing test framework. Users can create cell numbers that can perform end-to-end tests of workflows, like security verification checks and password resets with Mailosaur. You can prevent mistaken emailing to real customers and even set your own email domain. The tool is available for a free trial and it offers various price variations too to try its premium features.

Email on Acid is an email pre-deployment platform that helps companies to deliver perfect emails, improve marketing ROI and maintain their brand reputation simultaneously. The platform enables companies to optimise their email’s pre-deployment checklists. Thus enabling the brand to deliver error-free emails with just a click of a button. From accessibility checks that assure ADA compliance to validating and replacing first names of animated GIFs, the platform offers a variety of click-to-fix tools that fit users’ specific requirements. Also, companies utilising Email on Acid gets access to blocklist domain and spam tests that helps them improve email deliverability rates in no time. Users can check their emails against the 23 most popular spam filters and test their IP address against the most popular block list services. With email previews testing on over 90+ clients and devices, Email on Acid ensures that the generated emails will get displayed, like it has intended to in every inbox. Furthermore, the platform also comes loaded with a variety of necessary tools, empowering team members to collaborate with each other and get their efficiency levels enhanced accordingly.