Free Temporary Email for E2E Testing with @tempyemail/e2e-testing

@tempyemail/e2e-testing is the official JavaScript/TypeScript client for tempy.email, built for one job: making email assertions in automated tests as ordinary as clicking a button. The pattern it replaces is familiar and painful — a shared Gmail test account with IMAP polling, flaky regexes, and tests that collide when two CI jobs run at once. With the package, each test creates its own mailbox programmatically, so parallel runs never share state, and helpers like OTP extraction (6-digit, alphanumeric, and UUID formats) and verification-link extraction handle the parsing you'd otherwise reinvent per project.

Under the hood it polls with exponential backoff rather than fixed sleeps, which keeps tests fast when email arrives quickly (usually within a couple of seconds) and patient when it doesn't. It ships TypeScript definitions, works in Playwright, Cypress, Jest, and Vitest without adapters, and supports webhooks when you'd rather push than poll. The typical spec reads linearly: create a mailbox, drive your signup form with the generated address, await the OTP or magic link, assert, done. Because mailboxes are created through the tempy.email developer API, you'll want an API key from the developer portal for programmatic use.