I recently had a colleague ask me what a good “open rate” was for an E-Newsletter, and when the best time and day to send an E-Newsletter was.
I had heard 30% was the average open rate, but I did some Web searching to verify if that was true. It is. Most companies and organizations report open rates in the 15%-40% range. Typically E-Commerce E-Newsletters have the lowest open rates (under 20%) and Non-Profit E-Newsletters have the highest open rates (around 40%). This article has a graph with some more detail on this:
http://www.campaignmonitor.com/blog/post/2395/all-about-email-open-rates/
I also came across some studies which said the best time and day to send your E-Newsletter (for the highest open rates) is typically between 2-3PM EST on Tuesday, Wednesday or Thursday.
And now you know!