Six practices to make Playwright email-verification tests reliable and trustworthy

Playwright tests can falsely pass email-verification checks by reading stale or mismatched messages from a shared inbox, making green browser assertions insufficient on their own. A developer and technical co-founder of gettemp.email has outlined six practices to improve test reliability, including creating a fresh short-lived inbox per test run and matching messages by subject to avoid false positives. Tests should poll for email delivery with a fixed interval and deadline, validate extracted URLs strictly against the expected hostname, and delete inboxes in a finally block to ensure cleanup even after failures. Playwright trace artifacts should be treated as sensitive since they may capture addresses and verification URLs. The guidance includes a working code example using the MIT-licensed gettemp-email-testing package at v0.2.0, with a noted defect in its Playwright adapter that users are advised to avoid.