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Best SMTP Plugins for WordPress

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Do you want to send emails from your WordPress website? Do you want them to be delivered directly to the inboxes of intended readers instead of being marked as spam?

This is where SMTP plugins for WordPress come in! They highly improve the chances of your emails being delivered. They do this by automatically configuring WordPress SMTP and therefore allowing you to send WordPress emails via an SMTP server.  

What Is an SMTP Server? 

An SMTP server is an application that handles the transferring of emails: sending, receiving, and relaying on the internet. 

How Does This Work?

SMTP servers communicate with each other and authenticate the source of emails. 

What Is SMTP?

SMTP stands for Simple Mail Transfer Protocol. This is a set of guidelines for the submission and delivery of outbound and inbound email over the internet. It provides authentication for your emails so that they don't end up in spam folders. 

SMTP authenticates domains associated with your WordPress website. This is a way of ensuring that the email is coming from a real source that can be identified. In short, it shows that it's not spam sent from a fake address or fake domains. 

Why You Need SMTP Plugins

WordPress does not have native SMTP settings. By default, it uses the PHP mail system, which is unreliable and does not have authentication.

This results in mail being labeled as spam or even blocked. This can ruin your domain's reputation. Imagine being labeled as a spammer. Your email campaigns will never reach customers. Or buyers will lose trust in your business if they can't receive transaction emails. 

You will need to configure your WordPress to use SMTP so you can send out emails or newsletters. SMTP plugins for WordPress take care of this for you. 

4 Best SMTP Plugins for WordPress

1. WP Mail SMTP


With over 3 million downloads, WP Mail SMTP has become the most popular SMTP plugin for WordPress. And for good reason.

First, it ensures reliable delivery of your emails by configuring your WordPress website wp_mail() function to use SMTP and not PHP mail.

Secondly, it offers you an opportunity to use built-in SMTP providers by bringing them all in one plugin. You don't have to use different plugins for different providers. In fact, it offers a setup wizard that makes it extremely easy to connect with these providers. 

Providers include SendLayer, SMTP.com, Sendinblue, Mailgun, SendGrid, Amazon SES, Postmark, SparkPost, ZoHo Mail, and more. It also works with major email providers like Gmail, Yahoo, Outlook, and Microsoft. In addition, it comes with documentation for connecting to each.

You can check email reports from your dashboard. The report is a chart showing confirmed, unconfirmed, and failed emails. It also includes email opening and click counts. Outgoing emails are logged. This allows you to see the status, content, source, and recipient details. 

Finally, it offers safe migration of your settings if you're planning on switching from your old SMTP plugin. 

This is a freemium plugin, meaning it has a free version with a certain amount of features available for free, and if you want more features, you'll need to get the pro version. 

2. Easy WP SMTP


Simplicity is what Easy WP SMTP offers. It does not come with an intimidating number of features. This makes it perfect for beginners. And it is completely free.

Using this plugin to manually configure and send out all your emails via an SMTP server is easy. And if you have Gmail, Hotmail, or Yahoo accounts, you can connect them fairly quickly.  

However, if you want to connect to third-party email service providers like SendGrid, SendLayer, and others, it is not as easy. It's up to you to find the SMTP details of the host providers. It doesn't come with a connecting wizard to help smooth out this process. 

The plugin gives you the option to enable debug logging to see if the emails are getting sent out successfully or not. It also gives you the option to specify a reply-to email address.

3. Post SMTP Mailer

Post SMTP MailerPost SMTP MailerPost SMTP Mailer

To make sure that your emails will be delivered, Post SMTP uses the zend-mail library to replace the default WordPress SMTP library and PHPMailer. It has a free and pro version. 

The plugin comes with a setup wizard to connect quickly with SendGrid, Mailgun, Gmail, and other providers. The plugin also does a connectivity test to detect firewalls and eliminate configuration mistakes.

It also offers an email log, so that from your WordPress panel you can view any problems that have occurred. In addition, it uses OAuth 2.0, which discourages storing email passwords in the WordPress database and increases password security. 

Finally, where hosts like GoDaddy and Bluehost block standard SMTP, this plugin circumvents that block by delivering the emails via HTTPS.

It is compatible with Contact Form 7, WooCommerce, Mailster Newsletter Plugin, Gravity Forms, Elementor forms, and more. 

4. Gmail SMTP

Gmail SMTPGmail SMTPGmail SMTP

This plugin is ideal if you want to send your WordPress emails using your Gmail account. 

It reroutes Gmail through Gmail SMTP server, which uses OAuth 2.0 to authorize access to the Gmail API. This system is more secure, and you don't need to enter your Gmail username or password.  

Gmail SMTP offers basic authentication and email testing. 


SMTP plugins help you configure your WordPress SMTP sending so you send emails that have a high chance of being delivered to readers' inboxes. The plugins I've selected enjoy a high reputation among users. 

On CodeCanyon, you will find newsletter plugins that will allow you to send emails and newsletters once you configure the SMTP settings for your WordPress website.

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