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Separate email delivery, rendering, and identity boundaries
From release validation to personal privacy, each guide answers one specific question. Choose a task to find the right checklist.
2 guides
Verification · 9 min
2026 verification email evidence trail
Turn “sent” into a verifiable acceptance record using events, headers, and delivery results.
HTML email · 8 minTesting emails in dark mode
Check whether colors, transparent images, brand marks, and buttons remain readable under common dark-mode settings.