5 Best WordPress SMTP Plugins to Fix Email Delivery in 2025

Overlooked orders or customer emails to spam can lose you sales. A WordPress SMTP plugin addresses this by verifying your emails and sending them through trustworthy servers, boosting inbox placement. The following are the top 2025 picks:

1. WP Mail SMTP by WPForms
With 4M+ installations, WP Mail SMTP swaps WordPress's native mail function with proper SMTP configuration. It caters to leading providers such as Gmail, SendGrid, and Mailgun, provides email logging, testing features, and intelligent routing. The free variant includes essentials, and Pro ($49/year) includes analytics, notification, and multi-SMTP connections.

2. FluentSMTP
A completely free, high-performance plugin with unlimited SMTP connections, real-time logging, resend email, and advanced routing. FluentCRM integration and support for Gmail, Amazon SES, Mailgun, Outlook, and more. Best for high-volume sites such as WooCommerce stores. No official support—community-based support only. If you need advanced customizations or deeper email workflows, you can always collaborate with experienced WordPress Plugin Developers to extend the plugin’s functionalities.

3. Easy WP SMTP
Lightweight plugin for beginners that supports Gmail, Outlook, Yahoo, and custom SMTP servers. Includes TLS/SSL encryption, test emails, and debug logs. Ideal for small websites but does not have deep analysis. Costs $49/year for Pro version.

4. SureMail
Beginner-friendly and designed for reliability. Compatible with all leading SMTP providers, includes email failover, resend tools, analytics, and failure notifications. Ideal for small businesses that need email delivery to "just work" without complicated setup. Free to use, but fewer advanced settings.

5. Post SMTP Mailer
For business-level control, Post SMTP provides OAuth 2.0 login, logging with great detail, fallback SMTP, API sending, and delivery notifications via Slack or Chrome. Excellent for troubleshooting and team use where deep visibility is required. Pro is $59/year.

Picking the Right SMTP Plugin

For the novice: Easy WP SMTP or SureMail.

For advanced options: Post SMTP or WP Mail SMTP.

For free, full control: FluentSMTP.

Reliable email delivery is non-negotiable for any WordPress site—whether you’re sending order confirmations, password resets, or newsletters. Pick the plugin that matches your needs, and ensure every message lands exactly where it should: your customer’s inbox.

SOURCE URL: https://www.saffiretech.com/blog/best-wordpress-smtp-plugins/