How do you prevent a relapse after recovery?

You've climbed out of deliverability hell. Bounce rates are normal. Complaints are down. Engagement is solid. Now comes the hard part: not sliding backward.

The temptation to relapse is real. You're under pressure to send more volume. Someone wants to test a new list segment. A big promotion is coming and "just this once" you'll loosen the segmentation rules. This is how recovery dies. The behaviors that caused the original crisis don't change unless you actively prevent them.

Set up a monthly monitoring routine. Every Monday morning, check your bounce rate. Is it still below 2%? Check your complaint rate. Is it still under 0.2%? Look at your engagement metrics. Are opens and clicks stable, or dropping? Set calendar alerts for these checks. Most relapses show warning signs four to six weeks before they become crises. If you're watching, you'll catch them.

Automate the practices that saved you. Don't rely on willpower or team discipline. Build segmentation rules into your ESP that prevent sends to unengaged addresses unless someone explicitly overrides it. That friction is your friend. It makes exceptions visible instead of accidental. Set up automatic list cleaning so inactive addresses get removed on schedule. Make these the default operating system, not optional tasks.

Document what went wrong and what fixed it. Keep a one-page postmortem: what behavior caused the crisis, what changes you made, and which change had the biggest impact. Share it with your team. Reference it in email before big sends. Make it part of your culture, not just a document in a folder.

Your next step: schedule your first monthly check for next Monday. Screenshot your bounce, complaint, and engagement rates from your ESP and postmaster tools. Add it to a recurring calendar invite so it doesn't drift.