Customer Onboarding Email Checklist — illustrative example INPUT Onboarding flow: welcome email after signup; user connects first source; no message explains the next task. Proposed message owner: onboarding lead. RESULT Checklist finding: Milestone: first source connected. Current message: none. Gap: user has no instruction for the first useful task. Proposed content: explain how to preview one import and inspect the mapping before approval. Owner to confirm: onboarding lead. Check before activation: send only to users who connected a source and have not completed that next task. REVIEW An onboarding communication audit should compare messages with real milestones. More emails do not fix an unclear activation path. This is a teaching example, not a live execution record.