I installed k-9 mail for my home, pop, email account to cut out the frustration of not being able to 'delete all' from trash and deleted trash reappearing in inbox. Prior to k-9, I was using stock mail and never had an issue with email syncing. K-9 worked great for several days, but it quite syncing emails unless I was on my home wi-fi. Removed K-9 after being unable to resolve the issue; however, my stock email (earthlink) no longer syncs either. I've checked the server settings, rebooted, and checked & rechecked all my account settings. Gmail syncs just fine. Any suggestions? I've never had so many pesky, little email issues on an Android phone. Thank you for reading.