Top 22 SMTP WordPress Plugins for email deliverability

List of free WordPress SMTP plugins that you can download and install in your website for email domain authentication and deliverability.  You can use the plugins to integrate with SMTP service providers like Amazon SES, Gmail, G Suite, Microsoft Outlook, SendGrid, Pepipost, Sendinblue, Mailgun e.t.c 

Learn more about: What is SMTP or What is Deliverability? in email marketing. 

Criteria of Ranking: WordPress SMTP plugins below have been ranked according to the number of installs as of 29th July 2020. 

1. WP Mail STMP by WPForms

  • Plugin WordPress Page: wp mail smtp
  • Creator: wpforms
  • Rating: 4.5 of 656 reviews
  • Installation: 1+ million

2. Easy WP SMTP

  • Plugin WordPress Page: easy wp smtp
  • Creator: wp-ecommerce
  • Rating: 4.2 of 207 reviews
  • Installation: 400,000+

3. Post SMTP Mailer/Email Log

  • Plugin WordPress Page: post smtp
  • Creator: postmansmtp
  • Rating: 4.9 of 213 reviews
  • Installation: 200,000+

4. Contact Form & SMTP Plugin for WordPress by PirateForms

  • Plugin WordPress Page: pirate forms
  • Creator: wpforms
  • Rating: 4.7 of 224 reviews
  • Installation: 100,000+

5. Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue

  • Plugin WordPress Page: mailin
  • Creator: sendinblue
  • Rating: 4.5 of 104 reviews
  • Installation: 60,000+

6. WP SMTP

  • Plugin WordPress Page: wp smtp
  • Creator: Yehuda Hassine
  • Rating: 4.5 of 38 reviews
  • Installation: 60,000+

7. WP Mail SMTP by Mail Bank

  • Plugin WordPress Page: wp mail bank
  • Creator: tech-banker
  • Rating: 4.6 of 387 reviews
  • Installation: 50,000+

8. SMTP Mailer

  • Plugin WordPress Page: smtp mailer
  • Creator: wphowto
  • Rating: 4.5 of 35 reviews
  • Installation: 40,000+

9. WP Gmail SMTP

  • Plugin WordPress Page: gmail smtp
  • Creator: wphowto
  • Rating: 4 of 91 reviews
  • Installation: 20,000+

10. Cimy Swift SMTP

  • Plugin WordPress Page: cimy swift smtp
  • Creator: Marco Cimmino
  • Rating: 4.5 of 15 reviews
  • Installation: 8,000+

11. WP SendGrid SMTP

  • Plugin WordPress Page: wp sendgrid smtp
  • Creator: inkthemes
  • Rating: 5 of 3 reviews
  • Installation: 5,000+

12. WP Gmail SMTP

  • Plugin WordPress Page: wp gmail smtp
  • Creator: inkthemes
  • Rating: 3.2 of 5 reviews
  • Installation: 4,000+

13. SAR Friendly SMTP

  • Plugin WordPress Page: sar friendly smtp
  • Creator: samuelaguilera
  • Rating: 4.6 of 35 reviews
  • Installation: 3,000+

14. Yandex Mail SMTP Server for WordPress

15. SMTP BY BestWebSoft

  • Plugin WordPress Page: bws smtp
  • Creator: bestwebsoft
  • Rating: 4.4 of 14 reviews
  • Installation: 2,000+

16. SMTP Mail           

  • Plugin WordPress Page: smtp mail
  • Creator: photoboxone
  • Rating: 4 of 4 reviews
  • Installation: 1,000+

17. WP Mailgun SMTP

  • Plugin WordPress page: wp mailgun smtp
  • Creator: inkthemes
  • Rating: 1 of 1 review
  • Installation: 1,000+

18. MY SMTP WP

  • Plugin WordPress Page: my smtp wp
  • Creator: valeriosouza
  • Rating: 5 of 6 reviews
  • Installation: 1,000+

19. WP SMTP Config

  • Plugin WordPress Page: wp smtp config
  • Creator: Daniell Schroder, Holzhannes
  • Rating: 3 of 2 reviews
  • Installation: 1,000+

20. Mailster Multi SMTP

  • Plugin WordPress Page: mailster multi smtp
  • Creator: mailster
  • Rating: 3 of 1 review
  • Installation: 800+

21. WP Mailer Booster: #1 WordPress SMTP Plugin

  • Plugin WordPress Page: wp mail booster
  • Creator: tech-banker
  • Rating: 4.6 of 9 reviews
  • Installation: 700+

22. SMTP Mailing Queue

  • Plugin WordPress Page: smtp mailing queue
  • Creator: dennishildenbrand
  • Rating: 4.6 of 16 reviews
  • Installation: 500+

Important: Number of installations, ratings, and reviews were last updated on 29th July 2020. 

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