do_action( 'wp-mail.php' ) Fires to allow a plugin to do a complete takeover of Post by Email. ContentsDescription Source Changelog User Contributed Notes Description #Description Source #Source File: wp-mail.php View on Trac Top ↑Changelog #Changelog Changelog Version Description 2.9.0 Introduced. Top ↑User Contributed Notes #User Contributed Notes You must log in before being able to contribute a note or feedback.