SMTP Mailer vs Zoho ZeptoMail (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Quick Verdict
As of April 2026, Zoho ZeptoMail has a higher user rating (5/5 from 4 reviews) while SMTP Mailer leads in active installations (70K+ vs 5.0K+). Both are free WordPress plugins. SMTP Mailer has accumulated 1.4M+ total downloads while Zoho ZeptoMail has 70K+.
Detailed Comparison
| Metric | SMTP Mailer | Zoho ZeptoMail | |
|---|---|---|---|
| Rating | 4.5/5 | ► | 5/5 |
| Total Reviews | 65 | ◄ | 4 |
| Active Installs | 70K+ | ◄ | 5.0K+ |
| Total Downloads | 1.4M+ | ◄ | 70K+ |
| Support Resolution | N/A | 0% | |
| Last Updated | 1 month ago | ◄ | 2 months ago |
| First Released | 2015 | 2020 | |
| Age | 11 years | 6 years | |
| WP Requires | 6.9+ | 4.8+ | |
| PHP Requires | false+ | 5.6+ | |
| Business Model | Free | Free | |
| Latest Version | 1.1.25 | 3.3.3 |
Rating Breakdown
SMTP Mailer
Zoho ZeptoMail
Download Trends
Over the past 30 days, SMTP Mailer averaged approximately 449 daily downloads while Zoho ZeptoMail averaged 33.
Recent Reviews
SMTP Mailer Reviews
A basic and effective plugin. The best.
For my WordPress site, I didn’t want complex plugins with lots of options or that consumed a lot of resources. I was looking for something simple. At first, it didn’t work well because it wasn’t 10
Simple Setup, Works Great with CF7
I’ve tried some of the better-known ‘big name’ SMTP plugins, but none of them did exactly what I needed with CF7 sending both Mail and Mail (2) seamlessly. This one just works with no complications or
Simple needs, simple to use
I needed something quick and easy when a contact page on an old site started breaking for some reason and I decided to redo it with new plugins for the form and mailer. This plugin got me going and fi
Zoho ZeptoMail Reviews
Does The Job
I’ve only been using this plugin for about a week now, but no problems so far. The pay-as-you-go credit system is awesome for small businesses like me. Hope they keep maintaining it.
Liked this improved version
Tried this plugin a year back, but there was compatibility issue hence started using FluentSMTP plugin with Zepto account setup. But this version is really improved hence migrated back. The email l
Super easy to set up, works great!
Set up in 1 min. and just works!(the domain setup in ZeptoMail itself took a little longer ,)
More Phpmailer Worth Comparing
Top alternatives in the same category as SMTP Mailer and Zoho ZeptoMail
Zoho Mail Plugin lets you configure your Zoho Mail account on your WordPress site enabling you to send the email via Zoho Mail API.
Send WordPress emails from a M365 / Exchange Online Mailbox using Microsoft Graph, leveraging OAuth for authentication which is more secure than SMTP
Fixes WordPress emails going to spam/junk folders. The default settings often resolve the issue.
Configure SMTP mailing in WordPress, including support for sending email via SSL/TLS (such as Gmail).
Simple plugin that correctly sets the return-path header when using wp_mail. Mitigates the "via" and "The actual sender of" Notif …
A friendly SMTP plugin for WordPress. No third-party, simply using WordPress native possibilities.
Frequently Asked Questions
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.