Originally Posted by Stinsonddog
What's an OWA account?
OWA stands for Outlook Web Access. OWA exposes another "interface" to an Exchange email server in addtion to POP3 and IMAP4.
The main purpose of this interface is for web access to Outlook.
MS Outlook can be configured to use this OWA interface using only HTTPS, and you have all the functionality of MS-Outlook (including getting instant notification of emails).
So it is theoretically possible for BIS to use OWA to provide a very tight interface with a real-time push. Don't know if they have done that. I have access to a OWA/HTTPS interface at my work email. I tried it right after BIS 2.0 came out, and it seemed the same as IMAP. When I have time I'll try it again.