- Yahoo leads in email users, with 88.4 million in August 2008, according to comScore. Microsoft's Windows Live Hotmail has 45.2 million users, AOL has 44.8 million, and Google's Gmail has 26.0 million.
- Yahoo mail users spend the most time (286 minutes/month) reading their email, Gmail users spend the least (82 minutes), with AOL and Microsoft in the middle (229 and 204 minutes, respectively).
- Google users check email the least - 13.6 times on average in August, while Yahoo users visited 18.8 times. AOL and Microsoft fall between these two.
- In terms of total minutes spent reading email on each of the web-mail services, users spent 25 billion minutes in August on Yahoo mail. They spent 10 billion minutes on AOL mail, 9 billion on Microsoft's mail, and 2 billion on Gmail.
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