Dmytro Galko · open-source tools
Find out why a domain's mail lands in spam
Checks the things that actually put mail in the spam folder: the SPF ten-lookup limit, duplicated records, DKIM keys that have been revoked, DMARC stuck at p=none, and a missing MTA-STS policy. DNS only - no access to the mailbox is needed, which makes it usable on a prospect's domain.
17 offline checks over recorded DNS answers.
why emails go to spam, SPF too many lookups, DMARC p=none, DKIM revoked, MTA-STS missing.
If that is your week and you would rather someone else did it, write to hello@dkautomation.dev or open an issue.