Die
radicati group hat zum Markt der Email-Clients einige Studien erstellt, die käuflich zu erwerben sind.
Woanders kann man noch diese Aussagen lesen:
According to the Radicati Group, Microsoft is the dominant provider of desktop E-mail clients, with roughly 58% of the business market share and about 49% of the consumer market share. IBM Lotus, the next closest competitor, holds about 20% of the business desktop segment and less than 3% of consumer desktops.
Despite nearly 7 million downloads since its 1.0 release in December 2004, Thunderbird remains underrepresented on business desktops.