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testmail.app

QA tool for automating end-to-end email tests. Get unlimited private email addresses and inboxes for testing new user signups, transactional emails and drip campaigns, deliverability and spam scores, etc.

testmail.app is an email testing platform for developers and QA teams. Create unlimited test email addresses on the fly using namespaces and tags, with no inbox setup required. Tags make it easy to isolate emails between users and parallel test runs. Automate end-to-end testing of signups, password resets, OTPs, magic links, transactional emails, and other email workflows. Retrieve emails through JSON or GraphQL APIs with advanced filtering and live queries, or use the visual viewer to inspect rendered emails, HTML, headers, attachments, and deliverability checks.

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  • GraphQL API
  • Browser
  • JSON API
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testmail.app

testmail.app Reviews and Details

This page is designed to help you find out whether testmail.app is good and if it is the right choice for you.

#Email #APIs #Developer Tools #Email Testing #Email API #Test Automation

Screenshots and images

  • testmail.app testmail.app console
    testmail.app console //
    2026-07-12
  • testmail.app testmail.app visual viewer
    testmail.app visual viewer //
    2026-07-12

Features & Specs

  1. Email Testing Automation

    Automate email-dependent end-to-end tests for signups, password resets, OTPs, magic links, transactional emails, and notifications.

  2. Live Queries & Advanced Search

    Wait for emails in real time with live queries and retrieve exactly the message you need using filters, tags, tag prefixes, wildcards, and more.

  3. Integration Capabilities

    It supports integration with various development environments and CI/CD pipelines, streamlining the email testing process within the existing workflow.

  4. Multiple Inboxes

    Users can create multiple email inboxes for diverse testing scenarios, which helps in covering a wide range of test cases and conditions.

  5. JSON & GraphQL APIs

    Integrate with any programming language, testing framework, or CI/CD pipeline using the JSON or GraphQL API.

  6. Email Inspection & Debugging

    Inspect rendered HTML, text, headers, source, attachments, SPF/DKIM results, and SpamAssassin scores when debugging email tests.

  7. Deliverability Testing

    Check email content and links while also testing authentication and spam-related issues with detailed email and spam reports.

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Questions & Answers

As answered by people managing testmail.app.

  1. How would you describe the primary audience of testmail.app?

    testmail.app is built for developers and QA teams who need to test email workflows. It's used by organizations of all sizes to automate testing for sign-up flows, password resets, notifications, transactional emails, and other email-driven features in CI/CD pipelines.

  2. Who are some of the biggest customers of testmail.app?

    testmail.app is trusted by organizations of all sizes, including global companies such as Adobe, Salesforce, Toyota, Merck, Atlassian, Workday, Xerox, Philips, SAP, TransUnion, among many others.

  3. What's the story behind testmail.app?

    testmail.app started with a problem one of our founders experienced firsthand: making email testing reliable and easy to automate. We're a small, profitable (sustainable), 100% employee-owned Software-as-a-Service (SaaS) company. We are engineers who own and operate 100% of what we build. We choose work that we're passionate about - usually tackling niche pain points that we've experienced ourselves by building the elegant solutions we wished we had. We use our own apps every day, and we run our own email servers so we can dig deep and fix problems instead of waiting on third parties to get their act together.

  4. What makes testmail.app unique?

    testmail.app offers excellent value at every scale of email testing. All plans include unlimited users, email addresses, and mailboxes, so you don't pay extra as your team grows. You also get flexible APIs, live queries, and advanced email testing capabilities without being locked into a particular language or framework. Paid plans allow unlimited temporary usage surges, so unexpected increases in test volume won't break your CI/CD pipelines.

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External links

We have collected here some useful links to help you find out if testmail.app is good.

  • Public traffic stats of testmail.app

    Check the traffic stats of testmail.app on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.

  • Domain Rating (DR)

    Check the "Domain Rating" of testmail.app on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of testmail.app's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.

  • Domain Authority (DA)

    Check the "Domain Authority" of testmail.app on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.

  • Public opinion on Reddit

    The latest comments about testmail.app on Reddit. This can help you find out how popualr the product is and what people think about it.

Social recommendations and mentions

We have tracked the following product recommendations or mentions on various public social media platforms and blogs. They can help you see what people think about testmail.app and what they use it for.
  • Free for dev - list of software (SaaS, PaaS, IaaS, etc.)
    Testmail.app - Automate end-to-end email tests with unlimited mailboxes and a GraphQL API. 100 emails/month free forever, unlimited free for open source. - Source: dev.to / about 5 years ago
  • HBO MAX testing its email module on its existing user.
    I initially checked if it's a phishing link. But it wasn't. Found this funny. If you ever find yourself in a position to test your newly written email module, try out testmail.app (not a sponsored link). Source: about 5 years ago

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Is testmail.app good? This is an informative page that will help you find out. Moreover, you can review and discuss testmail.app here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.

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