Every email marketer knows that their preferred form of online promotional channel is extremely effective and provides a return on investment of well over $40 for each dollar spent, but there are plenty more jaw-dropping statistics which have surfaced in recent studies which eloquently prove the astounding power and reach of this greatest of all internet marketing strategies. Check these out and have them handy the next time someone challenges you to prove your assertion that email marketing rocks the planet.

1. Nearly universal market penetration – 95 percent of all online users access email on a regular basis with 91 percent checking it at least once every 24 hours.

2. Nearly universal business usage – 92 percent of all businesses utilize email marketing missives in order to share information about their operations.

3. Nearly universal feedback channel – 84 percent of all companies rely on email to solicit feedback from customers on how their brand is performing.

4. They love coupons – 70 percent of all netizens claim that they have used a coupon or discount from an email marketing missive in the prior week.

5. They seek coupons – 72 percent of all online users say that they have signed up for email subscriptions primarily to receive discounts.

6. Connecting with your customer – 70 percent of all online users state that they never fail to open the emails sent to them by their favorite brands.

7. Dwell time that’s off the scale – Both desktop/laptop and mobile users say that they have spent more time with email in the past week than with any other digital activity, an astounding hour more than Facebook.

8. They buy products – Fully 66 percent of all online consumers have completed a purchase as a direct result of receiving an email marketing message.

9. It’s de rigeur for content marketers – 80 percent of all content marketers utilize email marketing as a main element of their overall strategy.

10. They’re opened fast – Nearly 24 percent of all emails are opened within 60 minutes of being received, making email marketing one of the best ways to draw attention to a short lead time event or promotion.

11. Timing is critical – Companies such as eBags have realized an increase in average revenue per email subscriber of up to 187 percent.

12. Personalization works – Brands that personalize their email marketing subject lines receive an increase in open rate of over 22 percent.

13. Brands rely on it – 55 percent of all American companies are amply rewarded by their investment in email marketing as it generates at least ten percent of their total sales from all channels.

14. Frequency diminishes bounces – For brands which send out emails more than once a week, their average bounce rates drops all the way down to 0.5%.

15. Investment far above COLA – While the Cost Of Living Allowance for the last couple of years is averaging 1.6 percent, the investment brands are placing into email marketing campaigns is increasing by over 10 percent annually.

16. Blends work & personal – 87 percent of all online users review their personal and business email at the same time.

17. Brand websites drive engagement – 82 percent of all consumers have signed up to an email subscription list on that company’s website.

18. Subject line is important – The subject line is responsible for the opening of 33 percent of all emails, which provides further impetus for email marketers to excel at their composition.

19. The right subject line is even more important – All email marketers need to do to increase their clicks by nearly 62 percent is to include the word “alert” in their subject lines.

20. …as is the length of that subject line – Emails which feature a subject line length of between four and 15 characters manage to achieve a nearly 16 percent open rate.

Oh, and we have to throw another one in and call it a bonus statistic to shut down your colleagues who are enamored of social media above all other forms of marketing. Email conversion rates are three times higher than social media. Now you can use that as a pie in their Face…books!