Statistics on email client popularity or email client market share
As I mentioned in another post HTML Email – The Good, The Bad, and The Ugly, different email clients may display your HTML email differently. Thus it’s always a good idea to know what people, especially your target viewers, are using to read your HTML emails.
Below are two reports done by two different organizations specialized in email marketing. The data collected is pretty up-to-date: one in January 2010, and the other in February 2010. I’m only the messenger here. Hopefully you’ll find it helpful, and please share if you found some other reports about email client popularity.
Campaign Monitor – Most popular email client report
Campaign Monitor analyzed 12 months of data from its registered users/clients. Below is the email client market share as of January 2010.