Pending Email SMTP is a powerful WordPress plugin aimed at improving the efficiency of email delivery for websites. By queuing outgoing emails, it enhances the speed of form submissions while reducing the load on the server. The plugin temporarily stores emails in the database until they are sent, which allows for improved management of communications. Once the emails are dispatched, they are removed from the database, maintaining a clean system for users.

This plugin offers flexibility in email sending options, allowing users to utilize an SMTP server or the standard PHP mail function. Users can also choose to process the email queue using WordPress's built-in wp_cron or opt for a server-side cronjob if available. With compatibility for PHP version 5.4 and above, Pending Email SMTP is an excellent solution for a variety of WordPress installations.