In a world of digital communication, email has become an integral part of our lives. Whether it’s for personal or professional use, sending emails efficiently is crucial. To ensure the smooth delivery of these virtual correspondences, you might want to utilize tools like SMTP. So, what is SMTP?

SMTP is a widely used communication protocol for sending and receiving emails over the internet. It acts as a relay agent, transferring the email from one server to another until it reaches the intended recipient.

Understanding SMTP

SMTP, which stands for Simple Mail Transfer Protocol, is a communication protocol that plays an integral role in the world of email. It has become the widely accepted standard for sending and receiving emails over the internet. In essence, SMTP works behind the scenes as a digital postal worker. Its primary responsibility is to act as a relay agent, transferring the email from one server to another until it reaches the intended recipient’s inbox.

It’s helpful to think of SMTP as a system of communication between email servers. When an email is sent, the SMTP server processes this email, decides which server to send it to, and then transfers it accordingly. This process repeats until the email arrives at the destination server, which is usually the recipient’s email server.

SMTP in the context of WordPress

If you manage a WordPress website, using SMTP for email transmission is highly advisable. By default, WordPress uses the PHP mail function to send emails. However, this can face deliverability issues, as messages can be perceived as spam by certain email providers.

SMTP offers a more reliable and secure alternative. It sends emails through a designated mail server, unlike the PHP mail function that sends them directly from your web server, which often lacks proper configuration for email transmission. This use of SMTP enhances email deliverability and reduces the chances of your messages being marked as spam, ensuring effective communication from your WordPress site to your users.

The only issue here is that WordPress doesn’t support sending email through SMTP by default. You need a plugin to add that functionality to your site.

Plugins that facilitate sending emails through a website

There’s a handful of plugins that can help you set up SMTP on your WordPress site.


Post SMTP will allow you to connect with all the popular email service providers our there. It also has a range of advanced features and personalization options to fine-tune your email delivery. You can customize the body content and add dynamic variables to provide a consistent and professional look to your messages. Moreover, this plugin allows you to test your SMTP settings, log email activities, and set up email notifications for different events.


WP Mail SMTP is a powerful plugin that allows you to send emails using an SMTP server. It provides a user-friendly interface for configuring SMTP settings and offers compatibility with all popular email service providers, such as Gmail, Yahoo Mail, and others. It likewise helps minimize the chances of your messages being marked as spam.


Easy WP SMTP is an easily navigable and secure plugin. It supports popular SMTP providers like Gmail, Yahoo Mail, etc. With this plugin, you can enter your SMTP server details, set up authentication, and choose what type of encryption you want to use for your emails.

Final thoughts: what is SMTP?

SMTP plays a vital role in ensuring the successful delivery of emails from your WordPress website. Plugins like WP Mail SMTP and Post SMTP provide convenient solutions to set up SMTP on your digital platform. Now that you know what is SMTP and how to integrate it into your WordPress site, you can take the necessary steps to implement an improved email delivery system.

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