well, i’m with trevor above - lots of project specific emails that need to be grouped in a folder because messages contain no indication of project name, and the sender might be associated with multiple projects such that search by sender fails…however, i’m now exploring dropping these windows folder habits and since i’m new to mac and using devonthin pro, i may create a master mail archive database and simply move emails into project folder archives in a database such that my actual email is nearly empty excluding active items (as in, a tiny email app with everything else moved to a structured database, instead of trying to turn mail.app into a database…though with mailtags, i could also drop folder as well, but i am concerned that mailtags might break or fall apart with the next release of mail and the os, and i can’t bank my business on a small freebie type plugin…no offense to mailtags, it’s a great idea, but really seems to be a utility versus a solution for all email archiving…