SPF, DKIM, and DMARC Explained for US Small Businesses
A plain-English guide for US small businesses setting up SPF, DKIM, and DMARC before sending sales, marketing, or customer email at scale.
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Authentication guides.
SPF, DKIM, DMARC, DNS records, and email authentication troubleshooting.
DMARC Checker: Read Your DMARC Record Like a Pro
A practical DMARC checker guide for reading DMARC records, understanding p, rua, ruf, pct, adkim, aspf, sp, and fixing authentication alignment issues.
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DKIM Checker: What to Check When DKIM Fails
A practical DKIM checker guide for finding selector, DNS, key, signing, and DMARC alignment issues when DKIM fails.
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SPF Record Checker: How to Find and Fix SPF Issues
A practical guide to checking SPF records, diagnosing missing or duplicate SPF issues, fixing DNS mistakes, and protecting email deliverability.
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Email Authentication: Understanding SPF, DKIM, and DMARC
A practical guide to email authentication protocols and why they matter for deliverability.
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