A real inbox for your test suite, no signup: I built receivemail.dev

Description and use

Obtain a disposable email inbox via API without signup to test email flows in CI.

Problem

Testing email flows (signup verification, password reset) often requires real inboxes or heavyweight services, complicating test suites.

Outcome

Automated tests can now receive and assert on email content without external services or account management, reducing setup time and cost.

Workflow

• Create a mailbox via POST https://receivemail.dev/mailboxes
• Receive JSON with address, expiresAt, and secret
• Trigger application to send email to the returned address
• Poll GET https://receivemail.dev/mailboxes/<address>/messages with Authorization header Bearer <secret>
• Parse returned messages for verification in tests

Evidence

One API call gets you a real, receiving email address. No signup, no account, no SMTP config.

Source

Cloudflare's free tier (100k Worker requests/day, 5M D1 reads/day, unlimited Email Routing) covers this comfortably at the traffic I'd expect, so there's no billing to worry about

Source