How do you build a deliverability diagnostic checklist?
Technical checks:
- SPF, DKIM, DMARC passing
- DNS records intact
- Sending infrastructure operational
Reputation checks:
- Blocklist status (IP and domain)
- Gmail Postmaster reputation
- Microsoft SNDS status
- Feedback loop complaints
Behavioral checks:
- Volume changes (sudden increases)
- List composition changes
- Engagement pattern changes
- Content changes
Analysis:
- Bounce code review
- Provider-specific patterns
- Segment-specific patterns
- Timeline correlation
- Document and standardize the checklist for consistent diagnosis.
Pre-flight inspection checklist. Systematic review catches issues before guessing.
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