Email communication is a cornerstone of successful WordPress and WooCommerce websites. Whether you’re sending order confirmations, password reset emails, or marketing campaigns, ensuring reliable email delivery is critical. The default WordPress PHP mailer often results in emails landing in spam folders due to improper authentication. Simple Mail Transfer Protocol (SMTP) plugins provide a robust solution by ensuring your emails are authenticated and delivered successfully.
Here are the five best SMTP plugins for WordPress and WooCommerce in 2025:
1. WP Mail SMTP by WPForms
Overview
WP Mail SMTP is one of the most popular SMTP plugins for WordPress. Developed by WPForms, it simplifies email configuration and ensures your emails are delivered reliably.
Key Features
- Wide SMTP Provider Support: Integrates with popular providers like Gmail, Outlook, SendGrid, Amazon SES, and more.
- Email Logs: Keep track of all emails sent from your site with detailed logs.
- Smart Setup Wizard: Step-by-step guidance for configuring your SMTP settings.
- Pro Version: Includes advanced features like email reports, priority support, and integrations with email marketing platforms.
Use Case for WooCommerce
WP Mail SMTP ensures that WooCommerce transactional emails (e.g., order receipts and shipping notifications) reach customers without landing in spam folders.
Pros
- Easy setup for beginners.
- Comprehensive documentation and support.
- Enhanced security with OAuth 2.0 for Gmail and Outlook integrations.
Cons
- Some advanced features require the Pro version.
Pricing
- Free version available.
- Pro version starts at $49/year.
2. Post SMTP
Overview
Post SMTP is a powerful and reliable plugin that focuses on overcoming email delivery challenges. It’s a continuation of the Postman SMTP plugin, with improved security and support.
Key Features
- OAuth 2.0 Authentication: Secure integration with Gmail, Office 365, and other providers.
- Fallback Mechanism: Automatically switches to another SMTP server if the primary server fails.
- Email Logs and Debugging: Comprehensive tools for troubleshooting email issues.
- Notifications: Alerts you when an email fails to send.
Use Case for WooCommerce
Post SMTP ensures that WooCommerce emails are delivered even if one SMTP server encounters an issue, minimizing downtime.
Pros
- Free and feature-rich.
- Excellent debugging tools.
- Active development and community support.
Cons
- Initial setup can be complex for non-technical users.
Pricing
- 100% free.
3. FluentSMTP
Overview
FluentSMTP is a relatively new but highly efficient SMTP plugin that offers powerful features for free. It’s developed by the team behind FluentCRM, making it ideal for email marketing-focused websites.
Key Features
- Multiple SMTP Connections: Connect to multiple SMTP services and use them simultaneously.
- Email Routing: Send different types of emails through different SMTP servers.
- Detailed Email Logs: Includes tracking and error reporting.
- Native Integrations: Works seamlessly with FluentCRM and other email marketing tools.
Use Case for WooCommerce
FluentSMTP’s email routing feature allows you to send transactional emails through one provider and marketing emails through another, ensuring reliability and cost efficiency.
Pros
- Free with advanced features.
- Supports multiple SMTP connections.
- Active development and updates.
Cons
- Limited integrations compared to WP Mail SMTP.
Pricing
- Completely free.
4. Easy WP SMTP
Overview
Easy WP SMTP is a lightweight and straightforward plugin designed for users who want a no-frills solution to configure SMTP settings.
Key Features
- Basic SMTP Configuration: Supports Gmail, Yahoo, Outlook, and custom SMTP servers.
- Email Test Tool: Send test emails to verify your configuration.
- Debugging Option: Helps identify issues in the email-sending process.
- SPF and DKIM Support: Ensures proper email authentication to improve deliverability.
Use Case for WooCommerce
Easy WP SMTP is ideal for WooCommerce stores looking for a simple and reliable way to ensure transactional emails are delivered correctly.
Pros
- Lightweight and easy to use.
- Free and open source.
- Compatible with most SMTP providers.
Cons
- Limited advanced features.
- No email logs or tracking.
Pricing
- Free.
5. Sendinblue SMTP
Overview
Sendinblue SMTP is a specialized plugin for users of the Sendinblue email marketing platform. It’s perfect for websites looking to integrate transactional and marketing emails seamlessly.
Key Features
- Transactional Email API: High deliverability for WooCommerce transactional emails.
- Real-Time Email Tracking: Monitor open rates, click-throughs, and more.
- Marketing Automation: Integrates with Sendinblue’s email marketing tools.
- GDPR Compliant: Ensures compliance with data protection regulations.
Use Case for WooCommerce
Sendinblue SMTP allows WooCommerce stores to combine transactional and marketing emails under one platform, streamlining email management.
Pros
- Excellent deliverability.
- Real-time analytics and tracking.
- Ideal for combined transactional and marketing email use.
Cons
- Requires a Sendinblue account.
- Limited to Sendinblue’s SMTP service.
Pricing
- Free for up to 300 emails/day.
- Paid plans start at $25/month for higher limits.
How to Choose the Right SMTP Plugin
When selecting an SMTP plugin for your WordPress or WooCommerce site, consider the following factors:
- Email Volume: For high email volumes, consider plugins with advanced routing and analytics like FluentSMTP or Sendinblue SMTP.
- Ease of Use: WP Mail SMTP and Easy WP SMTP are user-friendly options for beginners.
- Advanced Features: If you need multiple SMTP connections or fallback mechanisms, FluentSMTP or Post SMTP are great choices.
- Budget: FluentSMTP and Easy WP SMTP are excellent free options, while WP Mail SMTP Pro offers advanced features at a cost.
Conclusion
Reliable email delivery is vital for maintaining customer trust and satisfaction in WordPress and WooCommerce. By choosing the right plugin, you can ensure your emails reach their intended recipients, enhancing your site’s performance and credibility. Whether you opt for the feature-rich WP Mail SMTP, the free and powerful Fluent, or the specialized Sendinblue , these plugins offer solutions tailored to a wide range of needs and budgets.
