from quite some time I am using Apple Mail signed in with my Gmail Account. I have almost 20K emails and I need to clean up my Gmail account, make separate folders and categorize them. But before that, I want to backup all the email database that I have in my Apple Mail. I am using the export function but it's taking too long and I am not a big fan of TIme Machine as it backs up all the other things as well along with your database folder consuming too much space, so I disabled it long time back. Is there any solution with which I can backup my Apple Mail Gmail account automatically at regular intervals to an external hard drive?
Looking for real helpful answers. Thanks