Hey folks, same problem here: had POP3 set up, changed to IMAP - using Galaxy S III stock email client - on my hosted email account and it doesn't sync properly. Server-to-phone works as expected (if you delete on server, it deletes on phone), but phone-to-server does NOT. You delete on phone, but once you refresh email, the deleted emails reappear.
I spent a pointless and useless half-hour with Samsung "tech" support on chat. I re-did everything on the phone, including deleting/re-adding account, wiping cache and data on Email app after deleting the account and before re-adding, doing soft reset of phone (removing battery). Same behavior occurred after I re-added account every time. I then REALLY proved it by downloading K-9 Mail and setting up IMAP. Works exactly like it should, syncing both ways. So the problem is definitely with Samsung's app.
After wasting my time on chat, the "tech" there said for me to call the voiceline for "advanced" support, which probably means they'll want me to do a hard reset - because, after all, it couldn't POSSIBLY be a problem on Samsung's end... Here is the number if you'd like to call and barrage them with enough noise until they admit it and fix it: 1-888-987-4357, Mon-Fri: 7 AM - 9 PM (CST), Sat: 9 AM - 6 PM (CST)
I spent a pointless and useless half-hour with Samsung "tech" support on chat. I re-did everything on the phone, including deleting/re-adding account, wiping cache and data on Email app after deleting the account and before re-adding, doing soft reset of phone (removing battery). Same behavior occurred after I re-added account every time. I then REALLY proved it by downloading K-9 Mail and setting up IMAP. Works exactly like it should, syncing both ways. So the problem is definitely with Samsung's app.
After wasting my time on chat, the "tech" there said for me to call the voiceline for "advanced" support, which probably means they'll want me to do a hard reset - because, after all, it couldn't POSSIBLY be a problem on Samsung's end... Here is the number if you'd like to call and barrage them with enough noise until they admit it and fix it: 1-888-987-4357, Mon-Fri: 7 AM - 9 PM (CST), Sat: 9 AM - 6 PM (CST)