You can set up IMAP accounts in the same profile, if desired, as the IMAP and POP can coexist, but not recommended. Previously downloaded messages will be in the POP account, but not in the IMAP account, as POP accounts usually delete from online after downloading. Any messages that were not downloaded will appear in the IMAP account. My recommendation is this: - first, copy the POP message folders to Local Folders, being sure to rename as needed to protect them. That may be best done by first defining folders in local folders for each account and then copying the folders there. Check to ensure that all are safely there. - now delete the POP account (to ensure that it doesn't continue reading and downloading and deleting messages) - now set up the IMAP accounts and you're good to go. Old messages in local folders and new messages in IMAP.