Many people want to use the BlackBerry as their mobile device. This presents a problem for hosted Exchange vendors.
Say they charge $15/month for support. RIM charges the service provider $3-$5/month for the use of a BES Server. This means the end user gets charged around an extra $10/month for mobile support. That’s expensive.
MailSite has a solution. The email vendor recently announced ActiveSync software for the BlackBerry. This is code that’s downloaded to the device. It then allows the BlackBerry to speak directly to Exchange, without any interim BES server. Hosted Exchange providers should investigate; it can help them cut a lot of cost and complexity.

2 Comments
I believe Rackspace offer a similar service, at http://www.rackspace.co.uk/hostedexchange/
Thanks
Thanks Mike. Yes, a number of Exchange SaaS offer Blackberry support.
–david