10 Best SMTP for SendGrid Alternatives in 2026
Updated September 7, 2026 · Ranked by how closely each plugin matches, from WordPress.org data · How this works
SMTP for SendGrid has 1,000+ active installs on WordPress.org. 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 for SendGrid
- 1
Swift SMTP
Closest matchSwift SMTP (formerly Welcome Email Editor)
4.2 (68) 7,000+ active installsSwift SMTP is a free & simple SMTP Plugin for WordPress.
Shares the WP Mail SMTP tag on WordPress.org. About 7 times the installs, last updated December 1, 2025.
- 2
WP SMTP Mailer – SMTP7
5.0 (113) 9,000+ active installsWP SMTP Mailer Plugin - SMTP7. Make email delivery easy from WordPress. It is easy to configure.
Shares the wp-mail tag on WordPress.org. About 9 times the installs, last updated 15 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.
Shares the sendgrid tag on WordPress.org. About 600 times the installs, last updated 25 days ago.
- 4
4.3 (36) 10,000+ active installsFix your email delivery problems by sending your WordPress emails through Amazon SES's powerful email sending infrastructure.
About 10 times the installs, last updated 19 days ago.
- 5
Sugar Calendar – Events Calendar, Event Tickets, and Events Management Platform
4.5 (24) 10,000+ active installsEasily manage events and sell tickets on your WordPress site. Sugar Calendar is easy-to-use, reliable, and exceptionally powerful. See for yourself.
About 10 times the installs, last updated 14 days ago.
- 6
4.8 (50) 7,000+ active installsWith this lightweight plugin you can create a contact form.
About 7 times the installs, last updated 23 days ago.
- 7
4.1 (103) 10,000+ active installsConnect to Gmail SMTP server to automatically send email from your WordPress site. Configure wp_mail() to use SMTP with OAuth 2.0 authentication.
About 10 times the installs, last updated 12 days ago.
- 8
HuCommerce
Paid version availableHuCommerce | Magyar kiegészítések WooCommerce webáruházakhoz
5.0 (32) 10,000+ active installsHasznos javítások és kiegészítések a magyar WooCommerce webáruházakhoz.
About 10 times the installs, last updated April 26, 2026.
- 9
4.8 (51) 10,000+ active installsFixes WordPress emails going to spam/junk folders. The default settings often resolve the issue.
About 10 times the installs, last updated 4 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
About 10 times the installs, last updated 2 days ago.
Switching from SMTP for SendGrid: common questions
What is the best alternative to SMTP for SendGrid?
Swift SMTP is the closest match: it shares the same WordPress.org tags and has 7,000+ active installs with a 4.2 out of 5 rating.
Which SMTP for SendGrid alternative has the most users?
FluentSMTP, with 600,000+ active installs reported by WordPress.org.
Which SMTP for SendGrid alternative is rated highest?
WP SMTP Mailer, rated 5.0 out of 5 by 113 reviewers. Only plugins with at least 50 reviews are counted.
Are these SMTP for SendGrid 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 for SendGrid 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 for SendGrid 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
Swift SMTP is the closest match to SMTP for SendGrid by the data we track, and FluentSMTP has the widest reach with 600,000+ 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.
Weekly · free
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.