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End-to-end email testing checks the whole loop a real user goes through: the app sends a message, the message arrives, and the link or code inside it actually works. Here is the pattern, a complete Playwright example, and how to stop flaky email tests.
Codex used Mailinator’s CLI. Meta’s Muse used only a browser. Both completed the same signup. Here are the two paths AI agents can take to handle email confirmation with Mailinator.
An exposed API token is not a reason to panic, but it is a reason to act fast. Rotate it first, find every copy, check usage for misuse, and fix the pattern that leaked it.
New Mailinator SDK releases for C# 2.0.0, Python 1.0.9, JavaScript 1.1.2, and Ruby 1.1.1 bring new endpoints, security fixes, better tests, and closer OpenAPI alignment.
