Forward or send ONE email to Devonthink?

[BLUEFROG]

Welcome @ek12

This is not a mechanism found in all apps and the ones you are discussing provide some kind of cloud service or are web-related applications.

Perhaps this is of interest…

Forward emails to Devonthink

You can somewhat replicate the Mail-to-Evernote experience on your Mac: In the Contacts app set up a new contact (click “Company” and give the “Company name” something like “2Devonthink” or “2DT”). In the email address field, let’s say your email address is “johnny.appleseed@icloud.com”, just add “+DT” or “+Devonthink” after the name before the “@”. So in this example it would be “johnny.appleseed+DT@icloud.com”. This is a little known fact that the “+” and anything after it up to the “@” …

Also, there are many ways to get data into DEVONthink. See the Help > Documentation > In & Out chapter.