The original title is 11 words: "How to Test Passwordless Login Emails in JavaScript Without Inbox Chaos"

Short summary

Use isolated disposable inboxes to test passwordless login end-to-end in staging, capturing emails from real Node.js flows and asserting the full browser-to-session journey. Track correlation IDs across request-to-mail-to-session logs to catch bugs that slip through API-only tests. Back up with lower-layer unit tests for token generation and TTL handling.

• •Test passwordless auth end-to-end using isolated temporary inboxes, not shared team mailboxes
• •Verify the complete journey: email generation, link retrieval, session creation, and replay prevention
• •Use correlation IDs to trace failures from request creation through mail delivery to session setup

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