Gmail is funny. The only webmail account that treats a sent message as a new message. Even though it gets categorized as a sent item, the BB sees it as a new message.

The GMAIL ICON application vs. BIS is a glorified browser connection to gmail. It works fine, but not as "localized" as a BIS connection using the standard messaging application. After using Gmail on BIS, you will be disappointed with the performance of the GMAIL ICON applet.