What's the Best Time to Send an Email? | Copyblogger

Talking email marketing strategy can be a bit like talking religion or politics at a party. Everyone has their own (very strong) opinions about what does - or does not - work. You've heard it all before: "Don't send anything on weekdays, on the weekends, or after 5 pm, because people aren't at their computers."

http://www.copyblogger.com/email-marketing-timing/