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Here’s a breakdown of the best day and time to send out an email blast based on the best open rates. 

The open rate measures how many people viewed or opened a specific message.

Keep in mind, when looking at how scheduling affects open rates, it’s important to remember that each list acts differently, so individual results will vary.

  • In general, email messages scheduled for delivery Mondays, Tuesdays and Wednesdays led to better open rates. Messages scheduled for delivery on the weekend fared the worst.
  • Email messages scheduled for delivery between early evening and early morning led to better open rates. Messages scheduled for delivery at lunch time resulted in the lowest open rates.
  • According to the results, opens peak the first hour after delivery, decline rapidly within the next 19 hours, after which point they taper off until all opens have occurred — approximately 2 weeks after the message has been sent.

email open rates by day

email open rates by delivery time

This data is from MailerMailer’s  13th Annual Email Marketing Metrics Report, which analyzed over 1.4 billion email messages sent between January 1, 2012 and December 31, 2012,

* Results have been adjusted to reflect the local time of the sender.