There’s still time to join the newsletter and email marketing boom. Here are 40 quick reasons why you should:

1. Over 4 billion people worldwide use email, with 306 billion emails sent per day.
2. Email has a median ROI of $42 for every $1 spent.
3. Email marketing drives 20% of all e-commerce orders.
4. Over 80% of consumers prefer to get company information via email over social media.
5. Personalized subject lines improve open rates by 26%.
6. Emails sent on Tuesday, Wednesday, and Thursday get the highest open rates.
7. Mobile optimization increases click-through rates by up to 96%.
8. Emails with 6 to 1 subject lines get the highest open rates.
9. Over 90% of customers check their email on mobile devices.
10. Segmenting your email list can improve click-through rates by 95%.
11. Email automation increases revenue by 10% or more for 83% of companies.
12. The ideal email length is 50–125 words long.
13. Over 50% of emails are opened within the first hour of delivery.
14. Email click-through rates are 2–3 times higher than social media.
15. Email generates $44 for every $1 spent, the highest ROI of any marketing channel.
16. GIFs in emails can increase open rates by up to 200%.
17. Abandoned shopping cart emails have a 60–70% redemption rate.
18. Email is 40 times more effective at acquiring customers than Facebook or Twitter.
19. Smartphones generate 54% of all email opens.
20. Email adoption is still growing, up over 50% since 2002.
21. Over 80% of customers prefer communication from businesses via email rather than social media.
22. Personalized subject lines have 26% higher open rates than generic subject lines.
23. Email newsletters help companies acquire 4 times as many new customers compared to social media.
24. Segmenting an email list improves click-through rates by 95% on average.
25. Only 18% of emails are actually opened, but they still drive more conversions than social media.
26. Email automation increases revenue by 10% or more for 8 in 10 companies.
27. Email newsletters are considered 50 times more effective at customer acquisition than Facebook or Twitter.
28. Abandoned shopping cart emails enjoy 60–70% redemption rates from users.
29. Scheduling emails to be delivered early morning or after work boosts open rates.
30. The best day to send emails is Tuesday between 10am and 3pm.
31. Plain text emails have higher open rates than HTML-formatted emails.
32. Links included in email signatures can improve CTRs by 55–70%.
33. Emails sent between 10–11 AM get higher open rates.
34. Abandoned shopping cart emails have a 70% redemption rate.
35. Personalized emails improve click-through rates by 14% and conversions by 10%.
36. Emails sent between Tues-Thurs enjoy higher open rates.
37. Email automation increases revenue for 83% of companies by 10% or more.
38. Email newsletters help acquire 4x more customers than social media.
39. Mobile-optimized emails improve click-through rates by 96%.
40. Adding interactive elements like quizzes or assessments in emails can increase click-through rates by up to 400%.

Convinced? Then what are you waiting for?