IMAP, however, continually syncs the app and your account to keep the information in both places identical.
Additionally, POP only downloads emails from the Inbox (not personalized folders), so to download all of your emails, you'd need to move email from existing folders to the Inbox.
This means that if you delete an email from your account after it's been downloaded, the downloaded copy remains in the app. POP downloads a copy of your emails from your account (.uk) to the app. There are two different protocols you can choose when setting up a third-party email app: POP or IMAP. You can use a third-party email app to download a copy of your AOL Mail email or to send and receive emails, if you'd prefer a different interface. email users - Read our help article for port and server settings.