Last May my neighbor was having 'delay' problems with her Go Daddy POP3 email account. They convinced her to move to IMAP. I got called when she could not get it set up. Finally got it set up. Outlook on her portable is setup as IMAP. Her cellphone is IMAP. The other day she accidentally fired up Outlook on the desktop PC which was not switched to IMAP. Outlook downloaded 216 messages using a POP3 configuration. And 216 disappeared from her portable PC InBox and her cellphone. I understand why.
What surprised me is the POP3 Outlook seemed to function normally. So, is there a server difference or is IMAP vs POP3 just an interface/access method difference?
Which means I could switch the portable PC back to POP3 with no problem.