{"id":87434,"date":"2023-10-20T09:05:57","date_gmt":"2023-10-20T09:05:57","guid":{"rendered":"https:\/\/postmansmtp.com\/?p=87434"},"modified":"2026-03-11T07:18:36","modified_gmt":"2026-03-11T07:18:36","slug":"wordpress-not-sending-emails","status":"publish","type":"post","link":"https:\/\/postmansmtp.com\/es\/wordpress-not-sending-emails\/","title":{"rendered":"How to Fix WordPress Not Sending Emails Issue [Step-by-Step]"},"content":{"rendered":"\n

Many website owners face the WordPress not sending emails issue. If you are one, then don’t worry. We’ve got you covered!<\/p>\n\n\n\n

Whether your contact form is not sending email notifications or your customers are not getting emails while placing orders on your WooCommerce store. Having this issue can adversely affect your business, resulting in revenue loss and potential leads.<\/p>\n\n\n\n

In this guide, we will walk you through the step-by-step process of how to fix the WordPress not sending emails issue using the Post SMTP WordPress plugin.<\/p>\n\n\n\n

Ready? Let\u2019s get started!<\/p>\n\n\n\n

5 Reasons Why Your WordPress Is Not Sending Emails?<\/strong><\/h2>\n\n\n\n

Before we jump into the solution, let\u2019s first understand why your WordPress site is not sending emails in the first place. Here are the five most common reasons:<\/p>\n\n\n\n

Reason #1: WordPress Default Configuration to Send Emails<\/strong><\/h3>\n\n\n\n

The default setting in WordPress for sending emails uses a PHP function called wp_mail(). This function relies on your web server to deliver the emails, which is usually not configured or optimized to deliver emails.<\/p>\n\n\n\n

Moreover, many email service providers (such as Gmail, Microsoft 365, Amazon SES, etc.) use various tools and techniques to filter out spam and junk emails. These tools often reject or block emails that are sent from WordPress using the PHP mail() function because they seem suspicious or unauthenticated.<\/p>\n\n\n\n

Reason #2: Lack of Email Authentication Protocols<\/strong><\/h3>\n\n\n\n

Using WordPress default PHP mail function (wp_mail) to send emails brings another problem, as sending WordPress emails this way does not implement proper authentication protocols like SPF, DKIM, and DMARC<\/a>.<\/p>\n\n\n\n

These email authentication protocols help prevent email spoofing, phishing, and spamming by ensuring that the email comes from the source it claims to be from.<\/p>\n\n\n\n

So, suppose your WordPress site is not using any of these protocols. In that case, your emails may not pass the verification tests of the email service providers, resulting in your emails being marked as spam, bounced back, or not delivered at all.<\/p>\n\n\n\n

Reason #3: Contact Form Plugin Configuration Issue<\/strong><\/h3>\n\n\n\n

Many contact form plugins allow you to customize the sender name and email address in the notification settings for each form. However, if you use an email address that does not belong to your domain name (such as gmail.com, yahoo.com, etc.), then it is highly likely that email servers will consider your emails as spoofing or malicious. <\/p>\n\n\n\n

Therefore, your emails trigger the spam filters of the email service provider and prevent your emails from reaching the recipients.<\/p>\n\n\n\n

Reason #4: Negative or Low Sender Reputation<\/strong><\/h3>\n\n\n\n

Sender reputation is a score that measures how trustworthy and reliable your email sender is. It depends on various factors, such as the quality and quantity of your emails, the feedback and complaints from the recipients, the bounce rate and delivery rate of your emails, and so on.<\/p>\n\n\n\n

You can severely damage your sender’s reputation if you send too many irrelevant or unsolicited emails with poor content or design or send emails to invalid or inactive addresses. The lower your sender reputation score is, the more likely your emails will be rejected or filtered out by the email service providers.<\/p>\n\n\n\n

Reason #5: Limitations Imposed by Web Hosting Company<\/strong><\/h3>\n\n\n\n

Some web hosts limit the number of emails you can send per hour or per day or block certain ports or protocols that are necessary for email delivery. They also disable the PHP mail() function altogether for security reasons.<\/p>\n\n\n\n

Moreover, if you are using a shared hosting plan, then you could also face some issues with email deliverability due to the actions of other users on the same server.<\/p>\n\n\n\n

For example, suppose another user on the same server is sending spam or malicious emails. In that case, their email service provider is likely to blacklist their IP, which inevitably affects your email delivery as well since you are sharing the same IP address with them.<\/p>\n\n\n\n

Use Post SMTP to Fix WordPress Not Sending Emails Issue [3 Easy Steps]<\/strong><\/h2>\n\n\n\n

Now that you know the possible causes of WordPress not sending emails, let’s see how to fix it using the Post SMTP WordPress plugin.<\/p>\n\n\n\n

Post SMTP is a powerful and easy-to-use WordPress SMTP plugin that allows you to connect your WordPress site to any SMTP server or service of your choice.<\/p>\n\n\n\n

For those who don’t know, SMTP stands for Simple Mail Transfer Protocol, which is the industry standard for sending emails over the Internet. Unlike PHP’s mail() function, SMTP implements appropriate authentication protocols and encryption methods that ensure high email deliverability and security.<\/p>\n\n\n\n

With Post SMTP, you can connect all major SMTP services, like Gmail (G Suite), Outlook (Microsoft Office 365<\/a>), Amazon SES, Brevo, SendGrid, Mailgun<\/a>, PostMark, etc, using the OAuth 2.0, which eliminates the need to store your email password in the WordPress database.<\/p>\n\n\n\n

Moreover, the plugin offers many incredible features, such as email logging, delivery failure, notifications, configuration testing, and more.<\/p>\n\n\n\n

To resolve the WordPress not sending emails issue, simply follow the steps below.<\/p>\n\n\n\n

Step #1: Install and Activate the Post SMTP WordPress Plugin<\/strong><\/h3>\n\n\n\n

To begin with, log in to your WordPress site Dashboard and navigate to Plugins \u2192 Add New<\/strong> to access the WordPress plugin directory.<\/p>\n\n\n\n