10 Best SMTP Mailer Alternatives in 2026
Updated September 7, 2026 · Ranked by how closely each plugin matches, from WordPress.org data · How this works
SMTP Mailer sits at #6 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 SMTP Mailer
- 1
Solid Mail
Closest matchSolid 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. A similar number of installs, rated 4.2 against 4.6, last updated May 12, 2026.
- 2
Easy WP SMTP – WordPress SMTP and Email Logs: Gmail SMTP, Office 365, Outlook, Custom SMTP, and more
4.6 (707) 500,000+ active installsMake SMTP email sending and delivery easy. Configure Gmail SMTP, Outlook, Brevo, SendGrid, Mailgun, SendLayer or connect to any SMTP server.
#4 in the WordPress.org Email Plugins ranking. About 7.1 times the installs, last updated 26 days ago.
- 3
4.7 (365) 300,000+ active installsLog, view, and resend all emails sent from your WordPress site. Great for resolving email sending issues or keeping a copy for auditing.
#10 in the WordPress.org Email Plugins ranking. About 4.3 times the installs, rated 4.7 against 4.6, last updated February 19, 2026.
- 4
Post SMTP
Paid version availablePost 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. About 4.3 times the installs, rated 4.7 against 4.6, last updated 13 days ago.
- 5
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. About 2.9 times the installs, last updated July 16, 2026.
- 6
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. About 2.9 times the installs, last updated 18 days ago.
- 7
WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin
4.8 (5,188) 4 million+ active installsMake email delivery easy for WordPress. Connect with SMTP, Gmail, Outlook, SendGrid, Mailgun, SES, Zoho, + more. Rated #1 WordPress SMTP Email plugin.
#1 in the WordPress.org Email Plugins ranking. About 57 times the installs, rated 4.8 against 4.6, last updated June 25, 2026.
- 8
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. About 8.6 times the installs, rated 4.8 against 4.6, last updated 26 days ago.
- 9
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. About 7.1 times the installs, last updated 27 days ago.
- 10
WPO365 | MICROSOFT 365 GRAPH MAILER
4.9 (39) 10,000+ active installsSend WordPress emails from a M365 / Exchange Online Mailbox using Microsoft Graph, leveraging OAuth for authentication which is more secure than SMTP
Shares the email, phpmailer, smtp tags on WordPress.org. 10,000+ installs against 70,000+, last updated 2 days ago.
SMTP Mailer 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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SMTP Mailer vs Solid Mail70,000+ vs 60,000+ installs · 4.6 vs 4.2
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SMTP Mailer vs Easy WP SMTP70,000+ vs 500,000+ installs · 4.6 vs 4.6
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SMTP Mailer vs WP Mail Logging70,000+ vs 300,000+ installs · 4.6 vs 4.7
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SMTP Mailer vs Post SMTP70,000+ vs 300,000+ installs · 4.6 vs 4.7
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SMTP Mailer vs Email Deliverability70,000+ vs 200,000+ installs · 4.6 vs 2.3
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SMTP Mailer vs SureMail70,000+ vs 200,000+ installs · 4.6 vs 4.7
Switching from SMTP Mailer: common questions
What is the best alternative to SMTP Mailer?
Solid Mail is the closest match: it shares the Email Plugins top 10 with SMTP Mailer and has 60,000+ active installs with a 4.2 out of 5 rating.
Which SMTP Mailer alternative has the most users?
WP Mail SMTP, with 4 million+ active installs reported by WordPress.org.
Which SMTP Mailer alternative is rated highest?
WP Mail SMTP, rated 4.8 out of 5 by 5,188 reviewers. Only plugins with at least 50 reviews are counted.
Are these SMTP Mailer 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 SMTP Mailer 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 SMTP Mailer 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
Solid Mail is the closest match to SMTP Mailer by the data we track, and WP Mail SMTP has the widest reach with 4 million+ active installs. WPO365 shipped the most recent release, on September 5, 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.