I use @BLUEFROG’s update to @cgrunenberg’s AppleScript to import selected mail messages to DEVONthink. The script is embedded in a super-simple Apple Shortcut. I’ve configured the Shortcut to “Pin in Menu Bar”, so just selecting messages and clicking the Shortcut brings up the Group Selector for choosing the destination for the .eml files. It’s free, painless, quick, has the same result as the old pre-Sonoma mail plugin, and the script has the Good DEVONechnologies Seal of Approval 
