He should have some insight, since he oversees Hotmail and Messenger.
Some findings:
The top five topics people tend to talk about in email:
1) social and entertainment arrangements 2) travel 3) career 4) education 5) electronics
Is email dying because of social networks?
Microsoft’s belief: “That’s not the case, certainly email is evolving.â€
More data:
For received emails (note: not actually what people read):
-37% is from person to person communications -6% to 15% is from social networks, “a relatively small part of the in-box experience†- 41% is uncategorized -15% other (within that, 21% is for shopping, 6% for financial and 5% travel)