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

How many emails are sent per day?

Please note that some of these numbers are easier to find than others. These email statistics come from news reports and are not necessarily scientific tallies. Basically, this is the best I can find and I don’t guarantee anything to be 100% accurate.

Percentage of email sent that is spam:


Last updated 7/17/15

Increase in click-to-open rates for email that is mobile optimized:

24% increase

Last updated 3/4/16

Increase in click-to-open rates for email that is designed responsively:

55% increase on mobile device; 23% on desktop

Last updated 3/4/16

Percentage of email that is deleted if it isn’t mobile optimized:


Last updated 3/4/16

Percentage of email marketers that use responsive design in all of their email:


Last updated 3/4/16

Most popular mobile device for email opens:

iPhone (w/33% of all opens)

Last updated 2/16/16

Percentage of emails that include malicious attachments:


Last updated 8/9/13

Top country where spam is generated:

United States

Last updated 10/18/13

Percentage of spam generated in the United States:


Last updated 10/18/13

Top country where spam is generated (per capita):


Last updated 10/18/13

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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