This is a pretty interesting report if you're deploying Exchange and/or thinking about connecting mobile devices to Exchange - with SP2 of course this becomes even more compelling. Enough about my favourite topic for now though :)

The scope of this Radicati report from the exec summary is

"This study provides an analysis of Microsoft Exchange from 2000 through 2009.  We examine revenue and installed base market share data for Microsoft Exchange in the following segments:

1.      Corporate Messaging Software:  CPE messaging software that is deployed within an organization

2.      Messaging Software for Service Providers:  Messaging server software designed for service provider customers (xSPs), including ISPs, ASPs, telecom operators, portals, wireless providers, and more. 

 

So hopefully that should prove useful if you're thinking "where is the market for (mobile) email?" between now and 2009. Just one stat to whet your appetite:

  • Between 2004 and 2005, the installed base of Exchange 2003 grew 60%.

The report is a pretty easy read that is mainly tablular in format so go ahead, take a look :)