What should be included in a deliverability audit?

Comprehensive deliverability audit components:

Authentication: SPF record analysis, DKIM key verification, DMARC policy review, alignment checks.

Reputation: IP reputation, domain reputation, blocklist status, postmaster data.

List quality: Bounce rates, complaint rates, list acquisition sources, hygiene practices.

Content: Spam trigger analysis, URL reputation, template review, header hygiene.

Sending practices: Volume patterns, frequency, segmentation, warming history.

Infrastructure: ESP configuration, IP setup, domain configuration.

Provider analysis: Performance breakdown by Gmail, Microsoft, Yahoo, others.

Examine every aspect of your operation that touches deliverability.