90 Interesting Facts About Email | How Many Emails are Sent Per Day?

How many emails are sent per day?

Percentage of B2B email that is opened on desktop computers:


Last updated 9/6/16

Percentage of US marketing email that makes it to a recipient’s inbox:


Last updated 8/12/16

Research shows that emails with 20 or fewer lines of text and three or fewer images result in the most number of click-throughs.

Subject line length that see the highest read rate:

61-70 characters

Last updated 4/29/15

Top day for email volume in 2015:

Cyber Monday

Percentage of commercial emails sent by brands in 2015 that were deleted without being read:


Type of Brands that had their emails deleted most without being read in 2015:

Office Supply Companies

Vertical with the highest email read rate in 2015:


Verticals with the lowest email read rate in 2015:

Business/marketing and social/dating companies

Company with most email unsubscribe requests in 2015 (according to Unroll.me):


Company that sent the most email per user in 2015 (according to Unroll.me):

Groupon (avg 388 emails sent per user)

Percentage of email marketers that look at opens and clicks for each send:


Last updated 2/16/16

Get the Full Report

Here are all the email marketing statistics I have been able to dig up over the years; 90 of them including stats on:

  • Global Email Data
  • Open and Click Rate Information
  • eCommerce Stats
  • Email Marketer Stats
  • Spam Statistics
  • Targeting, Segmentation and Personalization Stats
  • Etc.- all in one place

I try to go through each and every Facts About Email and Email Statistics regularly and update as much as possible, but we all know that some stats are easier to track down than others. As always, every stat is linked to its original source and has the source date listed.

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