Lifecycle email cleanup in 90 minutes: segment, sunset, and improve deliverability
If your email results are “fine” but open/click trends are slowly sliding, you probably don’t need a new template—you need a list hygiene + engagement system.
Core insight: Most deliverability + revenue wins come from reducing low-intent sends and separating engaged from unengaged—then treating each group differently. You can do a solid reset in one working session.
A 90-minute cleanup playbook (no fancy tools required)
Define “engaged” in one line. Pick a window that matches your buying cycle (e.g., clicked or purchased in last 90 days; if low volume, use 180). Keep it simple and consistent.
Create 3 segments (minimum viable).
- Engaged (clicked/purchased in window)
- Warm (opened but no clicks, or site visit/lead event)
- Unengaged (no opens/clicks in window) If you only have opens, still do it—just shorten the window and be conservative.
Stop blasting the unengaged group. Excluding unengaged from promos is the fastest way to reduce complaints and improve inbox placement for the people who actually want your emails.
Run a 2–3 email “sunset” flow for unengaged. Email 1: “Still want these?” (clear value, 1-click keep-me option) Email 2: resend to non-openers with a different subject/value angle Email 3: “We’ll pause emails” (confirm preference center / frequency options) Anyone who re-engages moves to Warm/Engaged; the rest get suppressed.
Throttle frequency by segment. Example starting point:
- Engaged: normal cadence
- Warm: 50–70% of promo volume (or only best offers)
- Unengaged: only sunset + essential transactional
Add 2 quick automations to prevent future rot.
- Engagement tagging (update “last_engaged_at” on click/purchase)
- Auto-suppress rule (e.g., suppress after 120/180 days no engagement)
Measure the right before/after. Track: complaint rate, bounce rate, inbox placement proxy (open rate trend), revenue per 1,000 emails, and unsub rate—by segment, not blended.
Discussion question: What engagement window (90/120/180 days) has worked best for your business type, and why?