The pre-send checklist that catches errors item 23 never does.

Ten checks, specific enough to fail on: staging links, personalization fallbacks, rendering, timezone, audience count. Three printable one-pagers, one for promotional sends, one for transactional, one for journeys, each with the checks specific to that type.

• ✓Ten to fifteen minutes to run, short enough that the last item gets read as carefully as the first
• ✓A named owner field, because shared responsibility is how a broken link ships
• ✓Extra checks for transactional sends and automated flows, not just one-time promos