If you’ve ever run into the issue of WordPress not sending emails reliably — you’re not alone. By default, WordPress uses the PHP mail() function, which often results in emails getting blocked, lost, or marked as spam. That’s where SMTP (Simple Mail Transfer Protocol) plugins come in — to ensure your emails are sent through a proper email server with authentication.
In this blog post, we’ll compare some of the most popular SMTP plugins for WordPress — including a promising new plugin called Comfort Email SMTP — to help you decide which one suits your website best.
SMTP Plugin Comparison Table
| Feature | Comfort Email SMTP | WP Mail SMTP | Easy WP SMTP | Post SMTP |
|---|---|---|---|---|
| Ease of Setup | Simple, guided setup | Setup wizard available | Easy setup with wizard | Configuration wizard provided |
| Supported Mailers | Gmail, Outlook, SMTP.com, SendLayer, Brevo, Mailgun, SES, SendGrid, Postmark, SMTP2GO, SparkPost, Zoho Mail | Gmail, Outlook, Brevo, Mailgun, SES, SMTP.com, SendLayer, Zoho Mail | Gmail, Mailgun, Outlook, SendGrid, SES, Brevo | Gmail, Office 365, Brevo, Mailgun, SES |
| Email Logging | Yes | Pro feature | Pro feature | Yes |
| Email Alerts | Yes, on failures | Pro feature | Pro feature | Yes, via mobile app |
| Backup Connection | Yes | Pro feature | Pro feature | Yes |
| Smart Routing | Yes | Pro feature | Pro feature | Yes |
| Open & Click Tracking | Yes | Pro feature | Pro feature | Not specified |
| Rate Limiting | Yes | Pro feature | Pro feature | Not specified |
| Optimized Sending | Yes | Pro feature | Pro feature | Not specified |
| Multisite Support | Yes | Yes | Yes | Yes |
| Support | Dedicated support | Priority for Pro users | Priority for Pro users | Community + Premium |
Highlight: Comfort Email SMTP
Comfort Email SMTP is a new plugin in the WordPress ecosystem but already provides most of the critical features users expect from an SMTP plugin. It includes:
- Support for major email providers
- Built-in email logging
- Alert system for failed emails
- Fallback connection support
- Smart routing and rate limiting
- Background (queued) sending and click/open tracking
Best of all — many features offered in the Pro versions of other plugins are available in Comfort Email SMTP out of the box.
Which SMTP Plugin Should You Choose?
If you’re looking for a plug-and-play solution with a big name and strong community support, you might lean toward WP Mail SMTP or Post SMTP. These plugins have been around for a while and offer robust integrations — especially if you opt for their Pro versions.
However, if you’re looking for a free plugin that does more out of the box — with logging, alerts, tracking, and support for all major SMTP services — then Comfort Email SMTP is a fantastic new alternative.
Final Thoughts
Don’t let WordPress’s default email system put your communication at risk. Whether you’re sending WooCommerce order receipts, contact form notifications, or newsletter emails — reliable SMTP delivery is a must.
Explore the plugins above, and give Comfort Email SMTP a try if you’re looking for a smart, modern, and powerful SMTP plugin for your WordPress site.