Free tool
SPF, DKIM & DMARC checker
Cold email that fails authentication goes to spam regardless of what it says. Enter your sending domain and we'll read its public DNS records and tell you what is missing.
DKIM is reported as unknown rather than failing when no record is found: DKIM records live at a selector you choose, this checks the 11 most common ones, and “we did not find yours” is not the same as “you do not have one”.
Records are only half of it
Correct SPF, DKIM and DMARC get you eligible for the inbox — they do not prove you reach it. Oxeyo sends seed emails through your own mailboxes and measures where they actually land, then automatically throttles a mailbox whose placement drops.
See how placement testing works