tristanslater

I managed to get it to work using this method. What I had wrong was I was still passing the form to the callback by reference.

In my case, I was adding to the existing body. Here is my final code that worked:

add_action('wpcf7_before_send_mail', 'wpcf7_update_email_body');

function wpcf7_update_email_body($contact_form) {
  $submission = WPCF7_Submission::get_instance();

  if ( $submission ) {
    $mail = $contact_form->prop('mail');
    $mail['body'] .= '<p>An extra paragraph at the end!</p>';
    $contact_form->set_properties(array('mail' => $mail));
  }
}

I hope this helps.

@cvmh

I’m having troubles with this too, but if you look at: https://contactform7.com/2014/07/02/contact-form-7-39-beta/

You can see that they say to set the mail property with the set_properties method like so:

$mail = $contact_form->prop( 'mail' );
$mail['subject'] = "Well, hello, Dolly";
$contact_form->set_properties( array( 'mail' => $mail ) );

I would assume it would be the same for changing the body, but I haven’t been able to get it to work.

Thank you

Thank you for you help.

Do you think there a way to add a add this to maybe overwrite the shortcode with a new plugin or just in functions.php?