MailCatcher vs testmail.app
MailCatcher
mailcatcher.metestmail.app
testmail.appSide by side
| Figure | MailCatcher | testmail.app |
|---|---|---|
| Price from | — | $9/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 0 | 6 |
| Spec score · Email Testing Software | 7.2 (#22) | 8.3 (#9) |
| Integrations | The site gives setup instructions for Rails, PHP, and Django applications. | The maker documents examples for using testmail.app with Cypress, Selenium, and TestCafe, including email OTP testing examples. |
| Purpose | MailCatcher runs an SMTP server that catches messages and displays them in a web interface. | testmail.app receives, parses, spam-tests, and indexes test emails so they can be retrieved by API for automated end-to-end testing. |
| Support | The maker asks users to file an issue and include the complete message when reporting processing problems. | The maker says support comes from real engineers and that most priority requests are answered within minutes. |
Plans
testmail.app
- FreeFree
- Essential$9 a month
- Pro$29 a month
- Enterprise$89 a month
- Unlimited$269 a month
- CustomPriced on request
In their own words
MailCatcher
MailCatcher has no write-up on Specifiction yet; its figures are above.
testmail.app
testmail.app receives, parses, spam-tests, and indexes test emails for automated end-to-end testing. Messages sent to addresses such as `{namespace}.{tag}@inbox.testmail.app` are routed into mailboxes, allowing tests to create addresses and mailboxes dynamically. The service provides simple JSON and GraphQL APIs, with client examples for JavaScript, PHP, Ruby, Python, Go, Bash, C#, and Java. Search includes wildcard queries, live waits for new mail, sorting, pagination, attachments, and SpamAssassin reports. GraphQL adds advanced filters, field selection, and custom sorting unavailable in the simple JSON API. Documented integrations cover Cypress, Selenium, TestCafe, and email OTP testing. New accounts receive a 14-day trial without a credit card, then move to the free plan. Free includes 100 emails monthly and one-day retention. Paid plans start at $9/mo (annual). Hosting uses AWS, with encrypted data and passwordless logins.