How to Setup an Email Account with Outlook 2019?
Go to File > Info and click on Add Account
Enter your full email address, such as yourname@example.com, and click Connect
In Advance Setup, select IMAP
Enter IMAP details as provided. Make sure to change the hostname to your server hostname and make sure that your IMAP port is correct
Enter your email password and click Connect.
Finally, click on Done.
You can now manage your newly-added email from the left sidebar under the Home tab of Outlook