I am having a problem with my Samsung Galaxy Note 5--emails associated only with one of my accounts (purchased domain) are being deleted as soon as I check them. I also have 'never' delete any emails selected in my incoming settings. I was having no issues until the most recent update this past week (Nov 9th 2015). I have changed my acct from a POP3 to IMAP so at least emails won't be deleted off the server but this is the strangest thing I have ever seen. I have already spoken to my email provider and they have recommended I go into my local Sprint store so I can find out what happened with that last update unless someone in this forum knows what may have happened. Again, NO problems until last Samsung update.