Enter your sending domain. Validates SPF, DKIM, DMARC, BIMI records. Recommendations to fix what fails.
Audit your sending domain\'s SPF, DKIM, DMARC, and MX records. Gmail and Yahoo enforce all three in 2026 — missing records send your emails to spam.
Gmail and Yahoo enforce all three since Feb 2024. SPF says which servers can send for your domain. DKIM cryptographically signs each message. DMARC tells receivers what to do when SPF/DKIM fail (none / quarantine / reject). Miss any one and you're in spam folders, especially for bulk sending (>5k/day).
DKIM records live at provider-specific selectors — google._domainkey, k1._domainkey, mte1._domainkey, etc. — and there's no universal way to discover the selector without your ESP's admin panel. Check inside Gmail, Mailchimp, ConvertKit, Beehiiv, or Postmark UI; they all expose DKIM record status.
Start with "none" + reporting (p=none, rua=mailto:dmarc@yourdomain.com) for 2-4 weeks to see who's sending. Then "quarantine" for 4-8 weeks once aligned. Then "reject" as the steady state. Going straight to "reject" without monitoring usually drops legitimate transactional email.
Authentication is necessary, not sufficient. Spam folder placement also depends on (a) sender reputation (cold IP, complaint rates, bounces), (b) content (spammy words, broken links, image-only emails), (c) list quality (unverified addresses, role-based accounts). Audit those next.
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