10 Best WP Mail SMTP Alternatives in 2026
Updated September 7, 2026 · Ranked by how closely each plugin matches, from WordPress.org data · How this works
WP Mail SMTP sits at #1 in the WordPress.org Email Plugins ranking. These 10 plugins share its category or its tags on WordPress.org, are actively maintained, and each has at least 100 active installs. They are ordered by how closely they match, not by our opinion.
The 10 closest alternatives to WP Mail SMTP
- 1
Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App
4.7 (525) 300,000+ active installsImprove WordPress email deliverability. Connect Gmail SMTP, Microsoft 365, Brevo, SendGrid, Mailgun, Zoho, Amazon SES, etc. #1 WordPress SMTP Plugin.
#3 in the WordPress.org Email Plugins ranking. 300,000+ installs against 4 million+, rated 4.7 against 4.8, last updated 13 days ago.
- 2
SureMail – SMTP and Email Logs Plugin with Amazon SES, Postmark, and Other Providers
4.7 (24) 200,000+ active installsSureMail – SMTP and Email Logs Plugin with Amazon SES, Postmark, and Other Providers
#7 in the WordPress.org Email Plugins ranking. 200,000+ installs against 4 million+, last updated 18 days ago.
- 3
FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, Mailgun, Postmark, Cloudflare, toSend, Gmail and Any SMTP
4.8 (400) 600,000+ active installsFree WP Mail SMTP plugin - fix WordPress email deliverability with Gmail, Amazon SES, SendGrid, Mailgun, Cloudflare, Postmark, Brevo and any SMTP.
#2 in the WordPress.org Email Plugins ranking. 600,000+ installs against 4 million+, last updated 25 days ago.
- 4
GoSMTP – SMTP for WordPress
4.3 (10) 500,000+ active installsSend emails from your WordPress site using your preferred SMTP provider like Gmail, Outlook, AWS, Zoho, SMTP.com, Brevo (formerly Sendinblue), Mailgun …
#5 in the WordPress.org Email Plugins ranking. 500,000+ installs against 4 million+, last updated 27 days ago.
- 5
Solid Mail – SMTP email and logging made by SolidWP
4.2 (52) 60,000+ active installsEmail deliverability made SOLID. Connect to your chosen email provider with an intuitive set-it-and-forget-it SMTP plugin.
#8 in the WordPress.org Email Plugins ranking. 60,000+ installs against 4 million+, rated 4.2 against 4.8, last updated May 12, 2026.
- 6
4.6 (67) 70,000+ active installsConfigure a SMTP server to send email from your WordPress site. Configure the wp_mail() function to use SMTP instead of the PHP mail() function.
#6 in the WordPress.org Email Plugins ranking. 70,000+ installs against 4 million+, rated 4.6 against 4.8, last updated 17 days ago.
- 7
Email Deliverability – SMTP Replacement, Email API Deliverability & Email Log
2.3 (16) 200,000+ active installsEffortlessly manage transactional emails with Email Deliverability. High deliverability, logs and statistics, and no SMTP plugins needed.
#9 in the WordPress.org Email Plugins ranking. 200,000+ installs against 4 million+, last updated July 16, 2026.
- 8
Spam protection, Honeypot, Anti-Spam by CleanTalk
4.8 (3,211) 200,000+ active installsTop-rated antispam for contact forms, comments, WooCommerce, eCommerce, and login. No CAPTCHAs, no friction, just background anti spam protection.
200,000+ installs against 4 million+, last updated 5 days ago.
- 9
Site Reviews
Paid version available4.9 (372) 60,000+ active installsSite Reviews is the best free reviews plugin. It integrates with WooCommerce & SureCart and works just like reviews on Amazon, Tripadvisor, and Yelp.
60,000+ installs against 4 million+, rated 4.9 against 4.8, last updated today.
- 10
All-In-One Security (AIOS) – Security and Firewall
4.7 (1,715) 1 million+ active installsProtect your website investment with All-In-One Security (AIOS) – a comprehensive and easy to use security plugin designed especially for WordPress.
About a quarter of the installs, rated 4.7 against 4.8, last updated 25 days ago.
WP Mail SMTP against each of them
Head to head on installs, ratings, reviews and updates. Each measure names its own leader; there is no overall winner.
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WP Mail SMTP vs Post SMTP4 million+ vs 300,000+ installs · 4.8 vs 4.7
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WP Mail SMTP vs SureMail4 million+ vs 200,000+ installs · 4.8 vs 4.7
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WP Mail SMTP vs FluentSMTP4 million+ vs 600,000+ installs · 4.8 vs 4.8
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WP Mail SMTP vs GoSMTP4 million+ vs 500,000+ installs · 4.8 vs 4.3
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WP Mail SMTP vs Solid Mail4 million+ vs 60,000+ installs · 4.8 vs 4.2
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WP Mail SMTP vs SMTP Mailer4 million+ vs 70,000+ installs · 4.8 vs 4.6
Switching from WP Mail SMTP: common questions
What is the best alternative to WP Mail SMTP?
Post SMTP is the closest match: it shares the Email Plugins top 10 with WP Mail SMTP and has 300,000+ active installs with a 4.7 out of 5 rating.
Which WP Mail SMTP alternative has the most users?
Security and Firewall, with 1 million+ active installs reported by WordPress.org.
Which WP Mail SMTP alternative is rated highest?
Site Reviews, rated 4.9 out of 5 by 372 reviewers. Only plugins with at least 50 reviews are counted.
Are these WP Mail SMTP alternatives free?
Every plugin listed here is free to install from WordPress.org. Where WordPress.org marks a plugin as commercial, the developer also sells a paid version or add-ons, and that is shown on each plugin.
How are alternatives chosen?
Automatically, from WordPress.org data: plugins that share a category top 10 with WP Mail SMTP score highest, then plugins that appear in the same WordPress.org rankings, then plugins with the same tags, weighted so rare tags count more than common ones. Plugins by the same author and plugins rated under 4.0 are left out.
How we choose these alternatives
Nothing on this page is picked by hand. Every day we walk the whole WordPress.org directory, then score every plugin against WP Mail SMTP on three signals: sharing a category top 10 counts most, then appearing in the same WordPress.org rankings, then carrying the same tags, with rare tags counting for more than common ones like "wordpress". Plugins by the same author are excluded, so an author's own add-ons cannot fill the list, and so is anything rated below 4.0 or with fewer than 100 active installs. The ten highest scores are what you see, in that order. Full methodology.
The bottom line
Post SMTP is the closest match to WP Mail SMTP by the data we track, and Security and Firewall has the widest reach with 1 million+ active installs. Site Reviews shipped the most recent release, on September 6, 2026. The list is rebuilt every day from WordPress.org, so a plugin that stops being maintained drops out on its own.
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What moved this week
One email a week, built from the same daily snapshots these rankings come from: the plugins that climbed, what launched, and one ranking worth a look.