Microsoft Leads Insourced Corporate Email Market

Palo Alto, CA – December 4th, 2006 – The latest study by The Radicati Group, “Corporate Email Market, 2006 – 2010,” provides a detailed analysis of the market for Corporate Email solutions. The study focuses on insourced corporate email solutions (i.e. deployed on-premises). It provides market size, market share by vendor, four-year forecasts, installed base by version for MS Exchange and IBM Lotus Domino, and more.

According to the study, the insourced Corporate Email market is expected to grow from 377 million mailboxes in 2006, to 513 million mailboxes in 2010. Revenue in the space is forecasted to grow from $2.5 billion in 2006, to over $3.6 billion in 2010.

The Corporate Email market is being driven by a number of factors, including more email users, and increased messaging traffic. The report shows growing demand for email security, mobile messaging, and Webmail functionality.

Microsoft leads the market with its MS Exchange platform, holding roughly a 33% installed base. IBM has over a 21% combined installed base with its Lotus Domino and Workplace Messaging platforms.


No surprises here I would say. Microsoft has taken the lead a few years back now and is expanding marketshare by the day.

I’ve seen recent figures for The Netherlands, which unfortunatly I can’t disclose due to copyright (working on it …) which show a major difference to the radicati figures in the positive sence for Microsoft Exchange ….

What I do find surprising is the large growth prediction wrt insourced mailboxes, growing from 377 Million mailboxes in 2006 to 513 in 2010. Whereas I would have thought that outsourced / hosted mailboxes would be a significant trend by then …