I added an IMAP account to AquaMail (latest version on Android 6.0.1 stock). It is the only account on there. It correctly added and mapped all my folders. But after a few days it added a folder called Junk Mail to my folder list for that account. I don't understand where it came from. It is not on my IMAP server, I have Inbox, Spam, Sent Mail, Draft and Spam. That was all AquaMail had for a few days but now it has a Junk Mail folder which was defaulted to 'not sync'. I have double checked the IMAP account and also all my other devices that connect to that account but the ONLY place the Junk Mail folder exists is on AquaMail on this phone. And it won't let me delete the folder. So where did this folder come from and why can't I delete a local folder that is not mapped, not synced and actually doesn't exist on the server? Thanks!