I've added my Gmail to Outlook 2013 via IMAP. Now whenever I compose an email, if I let it wait for a while, it saves a copy to my IMAP drafts folder. However, when I send the message, the message gets sent but the message in the drafts folder still remains! Eventually this has let to my drafts folder being useless because it doesn't have just drafts - it's got a lot of work-in-progress emails that aren't drafts (i.e. too much noise in my drafts!)
How can I setup Outlook so that when I send the email, it is cleared out of drafts?