Testmail
Automate tests for signup flows, transactional email, and spam scores with Testmail’s email testing tools.
About Testmail
Testmail provides test inboxes for automating checks of signup flows, transactional email, and spam scores. Addresses use the pattern {namespace}.{tag}@inbox.testmail.app, where changing the tag creates a separate address and mailbox, and received mail can be retrieved through a JSON API or GraphQL API for use in CI/CD pipelines. It also supports wildcard search, live queries that wait for new mail, attachments, and SpamAssassin reports.
The free forever plan includes 100 emails per month with unlimited addresses and mailboxes and does not require a credit card. Team use includes separate namespaces per project, shared test emails, and usage monitoring, with multiple separate teams limited to the enterprise plan.
Key features
- Generate unlimited test addresses with namespace-tag format
- Query received emails through JSON API or GraphQL API
- Advanced search with wildcard match, sorting and pagination
- Live queries that wait for new emails to arrive
- Spam testing with SpamAssassin reports
- Process attachments in received test emails
- Free plan provides 100 emails per month without requiring a credit card
- Allows unlimited email addresses, mailboxes and collaborators at no extra cost
- Offers both JSON and GraphQL APIs usable in CI/CD pipelines
- Free plan is limited to 100 emails per month
- Managing multiple separate teams requires the enterprise plan
Testmail at a glance
- Website
- testmail.app
- Category
- Development › Web Development
- Type
- Online tool
- Pricing
- Free
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Testmail FAQ
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