What are sustainable inbox health habits?

Habits for ongoing inbox health:

Regular list cleaning: Monthly hygiene passes. Remove bounces, complaints, inactive addresses.

Continuous monitoring: Weekly postmaster reviews. Regular seed testing.

Consistent sending: Predictable volume and frequency. No sudden spikes.

Engagement focus: Every send should provide value. Track and optimize engagement.

Fast complaint processing: Same-day FBL processing. Immediate suppression.

Authentication maintenance: Regular verification that SPF, DKIM, DMARC remain valid.

Inbox health is a practice, not a project. Consistent discipline maintains the standard.