About

About

This tool checks SPF, DKIM, and DMARC records the same way a receiving mail server would, then explains the results in plain language instead of raw DNS output.

It started as a way to learn backend development properly: real DNS lookups, real edge cases, real RFCs, not a tutorial project. Along the way it turned into something genuinely useful. Most free checkers either dump raw technical output or oversimplify to the point of being misleading. This one tries to sit in between: accurate, but written for someone who isn't already an email infrastructure expert.

It's actively maintained and improved. If something looks wrong or you have a suggestion, feedback is welcome.