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Continue to ChatGartner: Forecast: Enterprise E-Mail and Calendaring, Worldwide, 2006-2011 https://peterdehaas.net/2007/08/gartner-forecas.html
Gartner: Forecast: Enterprise E-Mail and Calendaring, Worldwide, 2006-2011 https://peterdehaas.net/2007/08/gartner-forecas.html