In Mail I have 3 mailboxes. Inbox, Sent and Trash, I would really like to have a Saved mailbox to be able to save some emails. I can't see any way to expand or add a mailbox, anyone got any ideas?
It depends on your email provider. If your provider only supports POP, I don't think you can get access to your other mail folders. If they support IMAP, the folders be added automatically.