I've been trying to get KMail set up properly for hours now, which is really frustrating, as most mail apps these days only take seconds to set up. I think I have it mostly working, but my gmail messages are not being automatically received in KMail. They are coming through when I hit "Check Mail", and they come through automatically in other applications such as Evolution, and on my iPhone.

I have another IMAP account from a different provider that is working fine in KMail so it seems to be specific to KMail + Gmail. I cannot see any errors anywhere, so I'm not sure how to continue troubleshooting, and I'd appreciate some assistance.