WP Mail SMTP is a WordPress plugin that allows you to add a custom email delivery service to your WordPress site. In case you didn’t know, WordPress has a default email delivery function called wp_mail. The function requires send_mail function belongs to PHP. However, not all web hosting providers (especially on the shared hosting plans) enable the function (the send_mail function). If the function is disabled by your hosting provider, your site won’t be able to send any content to your user emails. The common issue regarding the case is a contact form on your website failed to send the submitted form data.

WP Mail SMTP allows you to configure a custom email delivery service on your WordPress site more effortlessly. You can use whether a free email delivery service or paid services such as Amazon SES, Mailgun, SendGrid, and so on. Here are the services supported by WP Mail SMTP:

  • SendLayer
  • SMTP.com
  • Sendinblue
  • Amazon SES
  • Gmail
  • Mailgun
  • Microsoft 365
  • Postmark
  • SendGrid
  • SparkPost
  • Zoho Mail

WP Mail SMTP also comes with supporting features like built-in email reports to track the deliverability rate, CTR, number of total emails sent per week, and other stats. The WP Mail SMTP plugin itself is developed by the team of WPForms — one of the most popular form builder plugins for WordPress.