How do I call the WP_MAIL function from a page which has a form?

I would like to create a form in a page, and by pressing "Send" activate a function in the functions.php file, so the mail gets sent AND returning to a page where the form information is presented along with confirmation that the mail was actually sent.


This is the form:

      <form action = "<?php $_PHP_SELF ?>" method = "GET">
         Name: <input type = "text" name = "name" />
         Age: <input type = "text" name = "age" />
         <input type = "submit" />

Catching this in the content page does not work, should this be placed in the functions.php?

   if( $_GET["name"] || $_GET["age"] ) {
      echo "Welcome ". $_GET['name']. "<br />";
      echo "You are ". $_GET['age']. " years old.";

  • Use a POST form, and hook into init, check if the form is submitted by checking isset( $_POST['SUBMIT_BTN_NAME_HERE'] ). Also use nonces as they are good for security.
    – Ismail
    Aug 23, 2016 at 16:40

1 Answer 1


This can (and should) be achieved using the admin_post action. Take a look at the docs for an example:


SitePoint also have a more comprehensive tutorial here:


Hope that helps.

  • Will this also work when the visitors are not logged in as administrators?
    – AgoraLive
    Aug 23, 2016 at 10:09
  • @user2975926 Yes it will.
    – Matt Sims
    Nov 21, 2016 at 10:12

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