How to Run True End-to-End Email Tests in Playwright Without Mocking

Most email testing tutorials only verify that a send call was attempted, leaving the actual delivery and content untested. A more robust approach uses Playwright to drive a real signup flow while routing messages to a disposable inbox provisioned via a REST API, such as MoeMail. The setup involves four components: a unique per-test email address, the browser flow that triggers the send, a polling mechanism to retrieve the delivered message, and code or link extraction with assertions. Wrapping inbox creation in a Playwright fixture keeps transport logic out of individual tests and ensures each test run gets a fresh, isolated address. Key reliability tips include never sharing addresses across tests, asserting on regex extraction before using the result, and checking the HTML email part when plain-text content may be out of sync.