ABOUT THE DATA
The research presented in this report is composed of several data
sets; three collected by myself, Dan Zarrella, at HubSpot, and one
from our friends at Litmus. To get the most out of this report, it is
important to understand the differences in those datasets.
Survey responses about email use and preferences from over
1,000 English-speakers over 21 with an office-type job. Some of
these questions were also present in a 2011 version of the survey
we did for an earlier Science of Email piece. We were able to
compare statistics from the earlier version to the later version to
track trends in attitudes about and consumption preferences for
email over time.