***Updated***
IMAP is the default in cPanel for any email accounts setup. You don't need to do anything to use either POP or IMAP, just select the correct option during setup. If you use the automatic setup, then it will use IMAP, unless it is turned off.
IMAP will enable you to sync your mail and notes with the server, webmail and any other mail clients using IMAP and your account.
You should ensure you have your specific server and user details, which can be found in your control panel. For our hosting customers with a Feature Rich hosting account, you can use the generic server details below
To set up your email client, use the following generic settings:
Incoming
Outgoing
* Please remember that if you are transferring your domain name, you may need to wait up to 48 hours for the transfer to complete and the DNS to update around the world. Therefore, it may be better to use the generic server names for at least the first 48 hours after transfer, or before the transfer is initiated, of the domain name, especially if you do not want to lose email during the transfer.