I have some information about Google Apps for Your Domain ("Google AFYD") that I figured other might find useful:
- Google Notifier . Although it appears that it might not support it, if you enter your e-mail address from Google AFYD (i.e., "username@googleAFYDdomain.com") as your "username" in the Notifier application, Notifier will provide you e-mail and calendar notifications as it does for normal Gmail accounts. The nice part about using notifier is the closer to Outlook experience of notifications for new e-mails and pop-up notifications for Calendar events.
- Google (Gmail) Mobile. Google Mobile supports Google AFYD in much the same way as described above -- enter your e-mail address from Google AFYD as the "username" and Google Mobile works as it does for any other Gmail account. I have to say that with my Cingular 2125, the Google Mobile experience is less than pleasant and I'm simply going to stick accessing Gmail via my mobile browser using the http://gmail.com address.
I'll continue to post as I learn more about utilizing Google AFYD.