Procedure to Access Exchange Online Using POP3 Configuration

Server settings

Incoming mail (port 995)
Outgoing mail server (SMTP) (port: 587)
User name:<hku portal uid>
Password:<hku portal PIN>
Authentication Method:OAuth2

Note: If you select POP configuration, all your emails will be downloaded from the email server to the local folders of your mail client and you can no longer access your emails via HKU Portal/ It will be very difficult to revert and move your emails back to the email server.