DKIM signature online test

Created: 2021-10-16 — modified: 2021-11-16 — tags: net e-mail

If you ever wanted to see how validity of DKIM signature will be affected by changing email headers and / or message body

There's an easy online tool for that now!

Well, as long as pasting text into a webform is easier for you than into a locally installed opendkim-testmsg CLI tool.

Just navigate to opendkim-testmsg.shpakovsky.ru and play with your message. Possible uses include restoring messages mangled by mailing lists into their "original" state.

Let me know if you find any use for it :)