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Free MarTech Stack Audit
A written review of your website, hosting, DNS, tracking and tool spend.
Practical security for marketing websites and tools.
DNS
If your newsletters and campaign emails keep landing in spam, three DNS records are the first place to look. Here's what SPF, DKIM and DMARC do, and how to set them up without breaking anything.
8 Sep 2026 · 5 min read
