Email tools
Free email tools
Free tools to check and fix your email setup. No signup, no catch. We built these because getting email to land in the inbox is harder than it should be, and these are the checks we run ourselves.
DMARC Checker
Check whether your domain tells inbox providers what to do with mail that fails authentication. The record that ties SPF and DKIM together.
Run the check →SPF Checker
Check whether your domain authorizes the right servers to send on its behalf, and whether your SPF record is valid.
Run the check →DKIM Checker
Check whether your mail is cryptographically signed so receivers can trust it really came from you.
Run the check →These tools tell you what’s wrong. Yellaro makes sure it’s never wrong in the first place: managed Listmonk hosting with SPF, DKIM, DMARC, and deliverability handled for you. See how it works.