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Field notes on testing real email

How to make signup, OTP and notification tests deterministic — written for the engineers who get paged when they flake.

How to Test OTP Emails Without Flaky Waits

Learn a deterministic pattern for testing OTP emails in CI with isolated inboxes, bounded waits, parsed codes, and useful failure evidence.

Put the guide into practice

Create an isolated inbox and replace your fixed sleep with a bounded wait.

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