Does the control support the IMAP4 protocol?
Yes. The control supports both the POP3 and IMAP4 protocols, and the application can specify which protocol it wishes to use when connecting to the mail server. For more information on how to specify which protocol should be used, refer to the ServerType property in the documentation. Note that IMAP4 support was added in version 4.0 and is not available in previous versions of the control.