
Change the email accounts “Description” field in Settings > Accounts you created the DEVONthink folder in to Mail Hub (or keep description in mind, you’ll need it later).Turn on the Apple Mail plugin (in Apple Mail > Settings > General tab > Manage plugins).Create two subfolders inside DEVONthink (via right-click on the folder > “New mailbox…”) and name them Incoming and Outgoing (we’ll also import sent emails, so let’s keep them separate).Create a folder (via + button when hovering over account name) in one of your email accounts and name it exactly DEVONthink (that’s where we’ll move emails as a backup).


You need an always-on Mac running as a “server”, such as a Mac mini.After trying out a lot of different approaches and seeing most of them fail, I finally found a solution that works for me which I want to share. But I couldn’t find any solution that seemed to work reliably and was easy to maintain at the same time.

I found many topics on this forum where people try to find a reliable way of importing all emails into DEVONthink automatically to handle them in the inbox there using its advanced categorization features.
