FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider

What is FluentSMTP?

FluentSMTP is a free, open-source WordPress plugin that fixes email deliverability issues by intercepting the default wp_mail function and routing messages through dedicated email service providers. Developed by Shahjahan Jewel and backed by WPManageNinja LLC, the plugin has been available for 5 years and now serves over 600,000 active installs. It holds a 4.8 out of 5 rating from 380 reviews, with 92% of users giving it five stars. The plugin connects natively with services like Amazon SES, SendGrid, Mailgun, Postmark, and Google Workspace, sending emails via each provider’s direct API rather than slower SMTP relay methods.

Key Features of FluentSMTP

• Native API Connections – Sends emails directly through provider APIs (Amazon SES, SendGrid, Mailgun, Postmark, Google, and others) for faster delivery than standard SMTP.
• Email Routing & Fallback – Route transactional and marketing emails across multiple connections automatically, with a fallback provider if the primary fails.
• Email Logging & Resend – Logs every sent email, allowing you to review delivery status and resend any failed or previous messages from the logs.
• Detailed Reporting – View real-time delivery statistics, open rates, and failure reports within a VueJS-powered dashboard.
• Credential Storage Options – Store email service credentials either in the database or in the wp-config.php file for enhanced security.
• Any SMTP Provider Support – Connect to any standard SMTP server (including Zoho, Elastic Email, SMTP2GO) if a native API integration is not available.
• Gmail & Outlook OAuth – Authenticate with Gmail, Google Workspace, or Outlook using OAuth 2.0, eliminating the need for app passwords.

Who Should Use FluentSMTP?

FluentSMTP is designed for any WordPress site owner who needs reliable email delivery, from personal blogs to ecommerce stores. The plugin requires WordPress 5.5+ and PHP 7.4+, making it accessible to sites running modern stacks. With 600,000+ active installs and a 92% five-star rating, it suits both beginners and experienced developers. Beginners benefit from the guided setup wizard, while developers can store credentials in wp-config.php and configure multiple routing rules for high-volume transactional emails.

Typical use cases include WooCommerce stores sending order confirmations, membership sites delivering password resets, and agencies managing dozens of client sites. The plugin’s free, open-source model—part of WPManageNinja’s “Five for the Future” commitment—means there are no upgrade tiers or hidden costs. Even at scale, the native API connections keep sending fast and cost-effective, especially for Amazon SES users.

Installation & Setup

Install FluentSMTP directly from the WordPress plugin repository or by uploading the files to your server. After activation, navigate to the Fluent SMTP settings page in the admin menu. The setup wizard guides you through selecting an email provider, entering API keys or SMTP credentials, and testing the connection—all within a few minutes.

Support & Community

Support data from the last two months shows 11 open threads and 10 resolved, giving a 78% resolution rate. This indicates active maintenance and responsiveness from the developer. The plugin was last updated on December 28, 2025, and is tested up to WordPress 6.9.4. Of the 380 ratings, 3% are one-star, which is low for a plugin in this category. The primary support channel is the WordPress.org forum, where users report quick turnaround on configuration and credential issues.