I want a way to process mail from the keyboard. There is no way to move messages to a folder from the keyboard, and going to the mouse dramatically slows me down.
I want to tag messages -- what I mean by this is I want a way to edit the message so that I can add text to it somewhere that the search in mail will find. I do not wish to use commercial application mail tags. It crashed with a minor upgrade and I lost all my tags. I won't go back to that.
In Outlook you can edit a message to add text to the subject. Apple Mail does not allow that. Is there any way to add a tag to a mail message without using mail tags?