I just installed Devonthink 3 (MacOS 10.14.6) and the Plugin for Apple Mail. I can choose a mail in Apple Mail and select to “Add to Devonthink Pro Office” frorm the “E-Mail” Pulldown-menu, but it doesn’t import the mail. I only get a beep (is that an error sound?) and that’s it. The protocol in DT3 is empty.
I do not have an option “Add to DEVONthink Pro Office” option in Apple Mail, i think it should be called “Add to DEVONthink 3”. I believe DEVONthink Pro Office is wat is was called in previous versions.
Did you check the Mail Plugins, if the plugin is installed?
Yes, the plugin is installed. I had an older version of Pro installed before, perhaps that the problem. But perhaps it’s just non possible to import mails that way with the normal version of Devonthink 3?