Last updated: 09/01/2019
POP3 (Post Office Protocol 3) and IMAP (Internet Message Access Protocol) are the two main protocols used by applications to send and receive email. You can find out the differences between the two and which is best for your needs in the following article: What are the differences between POP3 and IMAP?
Should you decide you wish to change your Outlook email account from using a POP3 connection to an IMAP connection, you can do so using the following steps.
Switching from a POP3 connection to IMAP can result in your existing email being deleted, so you should create a backup of your mailboxes to avoid losing anything important.
With the backup completed, you can now delete the POP account in Outlook. You should also delete the account on other devices you use for email.
This automated process did not allow you to set the incoming and outgoing email server addresses, which we will do now:
If you wish to restore the mailboxes and email you backed up earlier...