Auto-Archive is a fantastic feature in Outlook that is missing in eM Client. It automatically moves messages older than a specified age from Personal Folders to matching folders Under Archive folders.

Sure beats having to archive manually every single message you want archived.

It would be great if individual folders could have the option to have their own auto archive settings (as can be done in Outlook 2010 or The Bat for instance).

this feature has already been implemented you can choose the archiving scope in Tools > Settings > Mail > Automatic Archiving.
But individual folders are not a planned feature.

If you want, you can create an “Idea” topic and let other users vote on this feature and if the user feedback is sufficient we might add it in future releases.

I hope this was helpful,