References these sections to understand and know the options available for using IMAP4 in GroupWise.
Subscribing and Unsubscribing to IMAP4 Folders
Alphabetizing the Folders in an IMAP4 Account
Downloading Only the Header (Subject) for IMAP4 Accounts
Downloading Voice Mail Attachments through an IMAP4 Account
Deleting Items from an IMAP4 Mail Server