Newsletter – SMTP Addon

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Version 1.1.0 report outdated
Updated on February 25, 2024
Auto Updates Yes
License GPLv2+

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The Newsletter – SMTP addon is a powerful WordPress plugin that enhances the functionality of the popular Newsletter plugin by integrating it with an SMTP (Simple Mail Transfer Protocol) service. This addon provides a seamless connection between your WordPress website and an SMTP server, allowing you to send emails reliably and efficiently.

Primary Function

The primary function of the Newsletter – SMTP addon is to improve the deliverability of your email campaigns by bypassing the default WordPress email system and using a dedicated SMTP server. By default, WordPress uses the PHP mail() function to send emails, which can sometimes lead to delivery issues due to various factors, such as server configuration or spam filters. This addon ensures that your emails are sent through a reliable SMTP server, increasing the chances of successful delivery.


1. Seamless Integration

The Newsletter – SMTP addon seamlessly integrates with the Newsletter plugin, providing a user-friendly interface to configure SMTP settings. Once installed and activated, you can easily connect your WordPress website to your preferred SMTP service provider.

2. Multiple SMTP Service Providers

This addon supports a wide range of SMTP service providers, including popular options like SendGrid, Mailgun, and You can choose the provider that best suits your needs and configure the necessary settings to establish a secure connection.

3. Custom SMTP Configuration

For advanced users, the addon allows custom SMTP configuration. You can specify the SMTP server address, port number, encryption method (such as SSL or TLS), and authentication credentials. This flexibility ensures compatibility with a variety of SMTP servers and gives you full control over your email delivery.

4. Email Logs

The addon provides detailed logs of all outgoing emails, including information about the recipient, subject, and status of each email. This feature is particularly useful for troubleshooting and monitoring the delivery status of your email campaigns.

5. Test Email Functionality

To ensure that your SMTP settings are properly configured, the addon includes a test email functionality. With just a few clicks, you can send a test email to verify that your SMTP connection is working correctly and that emails are being sent successfully.

6. Enhanced Email Deliverability

By utilizing an SMTP server, the addon significantly improves the deliverability of your emails. SMTP servers are designed to handle large volumes of emails, ensuring that your messages reach the recipient’s inbox rather than being flagged as spam. This is especially important for businesses and organizations that rely on email marketing campaigns to engage with their audience.

Situations or Use Cases

1. E-commerce Websites

For e-commerce websites that rely on email notifications, such as order confirmations or shipping updates, the Newsletter – SMTP addon is essential. It ensures that these critical emails are delivered promptly and reliably, reducing the chances of missed or delayed notifications.

2. Membership Sites

Membership sites often send automated emails to users, such as welcome messages, password reset instructions, or subscription renewal reminders. By using the Newsletter – SMTP addon, you can ensure that these emails reach your members’ inboxes, improving communication and user experience.

3. Newsletters and Email Campaigns

If you regularly send newsletters or run email marketing campaigns, the addon is a valuable tool to enhance your email deliverability. By avoiding common delivery issues associated with the default WordPress email system, you can increase the chances of your emails being opened and read by your subscribers.

4. High-Volume Websites

Websites that generate a high volume of outgoing emails, such as classifieds platforms or job boards, can benefit from the robustness of an SMTP server. The Newsletter – SMTP addon ensures that these websites can handle the email load efficiently, without overwhelming the default WordPress email system.

5. Multisite Networks

For WordPress multisite networks, where multiple websites are managed under a single installation, the addon provides a centralized solution for email delivery. Instead of relying on individual WordPress installations to handle email, the SMTP addon allows you to configure a single SMTP connection for all websites within the network, simplifying management and improving reliability.

In conclusion, the Newsletter – SMTP addon is a valuable extension for the Newsletter plugin, enabling reliable email delivery through SMTP servers. With its seamless integration, support for multiple SMTP service providers, and advanced configuration options, this addon enhances the deliverability of emails sent from your WordPress website. Whether you run an e-commerce store, a membership site, or engage in email marketing campaigns, the Newsletter – SMTP addon ensures that your messages reach the intended recipients’ inboxes, improving communication and user engagement.