Is it possible that people take 'doing email' as including facebook and other social media - messaging in any form?

Lets face it we tend to do those things through Web interfaces on desktop/laptops or in messaging style apps on phones that tend to look quite similar in layout.

And we need to be clear about the time frame as other posters have mentioned (per day or per week)

On the work based figures, I suspect that people include the time spent on a task generated by the email as 'doing email'. My colleagues certainly would, and a lot of the work related email we get is providing information directly into a rich format email.