You send a mail to an address - and then need to click "View Results". This sends you to "https://dkimvalidator.com/results" with a message of "I haven't received an email recently to....".
They do catch Ctrl-F5 keypress for reload. But if you just go to the URL bar and press enter you are returned to the front page with a new ID. You can paste the old address and then get the results but not a nice experience.
Personally I have been using https://www.appmaildev.com/en/dkim most frequently as it allows direct input rather than sending mail which is often more convenient (ex: I am looking at a failing message).
My only complaint is that for direct input it will say passed if any DKIM signature is valid, instead of reporting each. This often results in an AWS SES signature hiding the result of the one for the correct domain.
You send a mail to an address - and then need to click "View Results". This sends you to "https://dkimvalidator.com/results" with a message of "I haven't received an email recently to....".
They do catch Ctrl-F5 keypress for reload. But if you just go to the URL bar and press enter you are returned to the front page with a new ID. You can paste the old address and then get the results but not a nice experience.
So. Nice domain name and points for effort. But a far cry away from https://www.learndmarc.com/ and the old dog https://www.mail-tester.com/ which both are really great. Less battery included but MxToolbox Supertool is still preferable to this (https://mxtoolbox.com/SuperTool.aspx).
Even shivdeepaks weekend project (https://dmarcverified.com) is more straight-forward and to the point.
So not to be a party pooper but as this was not a "Show HN" this is not really worth your time.