This document summarizes different options for third party client access to GroupWise, including Internet access via POP/IMAP, Outlook access, accessibility through GMS and Outlook, and Mac access using IMAP/SMTP for mail synchronization and a calendar server for calendar and contact synchronization. Key points covered include ports required for POP/IMAP, security considerations for LDAP, features supported in Outlook setup, and using LDAP to access the system address book on the MTA.