First, welcome sequences that map to real product milestones—not arbitrary day counts—so timing matches behavior instead of the calendar.
Second, re-engagement paths triggered by decaying engagement scores, with offer tests rotated automatically and capped to protect margin.
Third, sales handoff workflows that package context for reps: pages viewed, objections clicked, and recommended talk tracks.
Fourth, post-purchase education that reduces churn by helping customers succeed in the first thirty days.
Fifth, referral prompts timed after a verified success moment, when satisfaction is highest.
Across hundreds of sends, the common thread is specificity: each workflow answers one question and proves one metric. That is how you get multiples on ROI instead of inbox noise.