How to Conduct an Email Campaign Audit

An email campaign audit is the fastest way to identify what is working, what is not, and where your biggest opportunities lie. Most brands operate on assumptions about their email performance that a proper audit would challenge. A thorough audit examines every aspect of your program—strategy, content, design, deliverability, and analytics—and produces a prioritized list of improvements.

Start with deliverability, because none of your other work matters if emails are not reaching the inbox. Check your authentication records (SPF, DKIM, DMARC), sender score, blacklist status, and spam complaint rates. Review bounce rates and list hygiene practices. Any deliverability issues discovered here must be resolved before moving to other audit areas, as they undermine every other improvement you make.

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Next, audit your content and design. Review the last 12 campaigns across three dimensions: subject line performance, content relevance, and CTA effectiveness. Identify patterns: which subject line formulas consistently win? Which content topics drive the highest engagement? Which CTAs get the most clicks? Document three to five actionable findings that you can implement immediately, then create a 90-day roadmap to address systemic issues found during the audit.