What KPIs prove that recovery is stable?
KPIs indicating stable recovery:
Postmaster metrics:
Gmail reputation stable at Medium or High for 4+ weeks
SNDS consistently green
No yellow or red periods
Engagement metrics:
Open rates consistent (not declining)
Click rates stable
Complaint rate below 0.1%
Delivery metrics:
Bounce rate stable and low
No policy bounces
Consistent inbox placement
Absence of problems:
No blocklist listings
No delivery emergencies
No stakeholder complaints
Stability means consistent good metrics, not just one good week.
Health is sustained good vital signs over time, not a single good checkup.
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