Gmail · Yahoo · Outlook sender requirements
Will your email pass authentication?
Check your domain's SPF, DKIM and DMARC against what Gmail, Yahoo and Outlook now require. See exactly what fails — and get the precise DNS records to fix it.
🔒 Analyzed entirely in your browser — nothing is uploaded or stored. · 브라우저 안에서만 분석, 전송·저장 없음
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Your domain
Paste the DNS TXT records exactly as your provider shows them. Look up example.com TXT, _dmarc.example.com TXT, and your DKIM selector (selector._domainkey.example.com) TXT.