Exchange support is an absolute requirement if G1 has to impress the enterprise users. During the launch of G1, Andy Rubin had said that they left Exchange support for 3rd party developers to work on, so it was clear that this support wouldn't be expected from Google.
Cemaphore, which synchronizes e-mail, calendars and contacts between Google Apps and Microsoft, said it has enabled Exchange support on Android. Cemaphore's MailShadowG, will now let users access and update their Exchange data through G1. Tyrone Pike, CEO and President said, "We are currently working with some very large service providers around the world right now who see that as a real need."
In simple words, if you or your company subscribes to their MailShadowG solution, you can access all your Exchange data through Gmail.
From now until Nov. 30, solo-end users and businesses can subscribe to MailShadowG for $29.95 per user, per year. After that date, it will cost nearly double $49.95.