I just upgraded to Android 6.0.1. Previoulsy, when e-mails received on the phone, I could either reply to them, or if Outlook is open on my desktop, they would, after five minutes, automatically go to the Outlook Inbox, and drop from my phone. Now, the e-mails remain on the phone and have to be manually deleted. The Server setting is set to "Delete email from server when deleted from Inbox", which is how it was before. I confirmed that e-mails are off server, and go to my Outlook ,but they remain on my phone and requiring me to manually remove them.