Overriding the default WP Multisite notification e-mail

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Is it possible to hook in and override the default notification message for WP MS? I know the message being sent out is in /wp-admin/user-new.php 

if ( is_multisite() ) {
    function admin_created_user_email( $text ) {
        /* translators: 1: Site name, 2: site URL, 3: role */
        return sprintf( __( 'Hi,
You've been invited to join '%1$s' at
%2$s as a %3$s.
If you do not want to join this site please ignore
this email. This invitation will expire in a few days.

Please click the following link to activate your user account:
%%s' ), get_bloginfo('name'), site_url(), esc_html( $_REQUEST[ 'role' ] ) );
    }
    add_filter( 'wpmu_signup_user_notification_email', 'admin_created_user_email' );

    function admin_created_user_subject( $text ) {
        return "[" . get_bloginfo('name') . "] Your site invite";
    }
}

I believe I can do it if I can find the right hook in so that I can remove_filter() and then add my own in. I had been toying with the following (admin_created_user_email2 is my new function):

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function reset_admin_email(){
    remove_filter( 'wpmu_signup_user_notification_email', 'admin_created_user_email' );
    add_filter( 'wpmu_signup_user_notification_email', 'admin_created_user_email2', 1 );
}

I was reading this page that lists the actions/hooks I can tie into, but I can’t figure out which one to use (if any of them will even work)

Does anyone have experience with this to point me in the right direction?

Thanks

Levi

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6 comments

  1. I was able to override the multi-site notification email by adding these:

    remove_filter('wpmu_signup_user_notification_email','admin_created_user_email');
add_filter('wpmu_signup_user_notification_email',<function_name_here>);
add_filter('wpmu_signup_user_notification',<function_name_here>);
add_filter('wpmu_signup_user_notification_subject',<function_name_here>);

    Adding the three filters at bottom i.e. email,notification and subject allows you to override the content and the subject of the email.

  2. @user2647 seems to be on the right path, but I think that this is more correct:

    remove_action( 'wpmu_new_user', 'newuser_notify_siteadmin' );
add_action( 'wpmu_new_user', 'my_notification' );

function my_notification ($user_id) {
  // Make your custom notification here.
}

  3. remove_filter has no effect because /wp-admin/user-new.php runs

    add_filter('wpmu_signup_user_notification_email', admin_created_user_email);

    every time it loads, after plugins_loaded.

    I got this to work by adding a new filter with a lower priority (higher number), so it runs after admin_created_user_email, which has the default priority (10):

    function reset_admin_email(){
    add_filter( 'wpmu_signup_user_notification_email', 'admin_created_user_email2', 11 );
}

  4. Would this kind of thing work?

    if ( !function_exists('wp_new_user_notification') ) {
function wp_new_user_notification( $user_id, $plaintext_pass = '' ) {
    $user = new WP_User($user_id);

    $user_login = stripslashes($user->user_login);
    $user_email = stripslashes($user->user_email);
            $message = $user_login . " " . $user_email;

    wp_mail($user_email, sprintf(__('[%s] Your username and password'), get_option('blogname')), $message);

}
}

  5. Dylan has the correct answer but to elaborate.

    Add a filter that fires after the default one using a higher priority then 10:

    add_filter( 'wpmu_signup_user_notification_email', 'wp_new_user_notification', 11 );

    The function for the content:

    function wp_new_user_notification( $user_id, $plaintext_pass = '' ) {

            $user = new WP_User( $user_id );

            $user_login = stripslashes( $user->user_login );
            $user_email = stripslashes( $user->user_email );

            $message  = sprintf( __('New user registration on %s:'), get_option('blogname') ) . "rnrn";
            $message .= sprintf( __('Username: %s'), $user_login ) . "rnrn";
            $message .= sprintf( __('E-mail: %s'), $user_email ) . "rn";

            @wp_mail(
                get_option('admin_email'),
                sprintf(__('[%s] New User Registration'), get_option('blogname') ),
                $message
            );

            if ( empty( $plaintext_pass ) )
                return;

            $message  = __('Hi there,') . "rnrn";
            $message .= sprintf( __("Welcomeeee to %s! Here's how to log in:"), get_option('blogname')) . "rnrn";
            $message .= wp_login_url() . "rn";
            $message .= sprintf( __('Username: %s'), $user_login ) . "rn";
            $message .= sprintf( __('Password: %s'), $plaintext_pass ) . "rnrn";
            $message .= sprintf( __('If you have any problems, please contact me at %s.'), get_option('admin_email') ) . "rnrn";
            $message .= __('Adios!');

            wp_mail(
                $user_email,
                sprintf( __('[%s] Yourrrrrrr username and password'), get_option('blogname') ),
                $message
            );
        }
    • This code is a copy paste from Codex example.
    • Referenced directly in core here.

    Finally drop it into the mu-plugins folder wp-content/mu-plugins

  6. Most of the text in those emails is translatable, which means we can tap into WP’s gettext filter. I found the following method of implementing translations online but can’t find the original source.

    First define your filter hook:

    add_filter('gettext', [new AddAction(), 'gqa_text_strings'], 20, 3);

    Then your translation function:

     /**
 * Change a few text strings related to the login/registration process
 *
 * @link http://codex.wordpress.org/Plugin_API/Filter_Reference/gettext
 *
 * @param $translated_text
 * @param $text
 * @param $domain
 *
 * @return string
 */
function gqa_text_strings($translated_text, $text, $domain)
{
    switch ( $translated_text ) {
        case 'Get your own %s account in seconds' :
            $translated_text = __('Request access to %s', 'gqa');
            break;
        case 'We send your registration email to this address. (Double-check your email address before continuing.)' :
            $translated_text = __('', 'gqa');
            break;
        case 'But, before you can start using your new username, <strong>you must activate it</strong>.' :
            $translated_text = __('An email with login instructions has been sent to the address you provided.', 'gqa');
            break;
        case "Check your inbox at %s and click the link given." :
            $translated_text = __('Check your inbox at %s.', 'gqa');
            break;
        case 'If you do not activate your username within two days, you will have to sign up again.' :
            $translated_text = __('', 'gqa');
            break;
        // Subject line for new user registration email
        case 'New %1$s User: %2$s' :
            $translated_text = __('Your account information');
            break;
        // Error message when registering a new account with an already used username.
        case 'That username is currently reserved but may be available in a couple of days.' :
            $translated_text = __('A user with that username already exists. Do you already have an account? Please contact site administrators or try again.');
            break;
        // Error message when registering a new account with an already used email address.
        case 'That email address has already been used. Please check your inbox for an activation email. It will become available in a couple of days if you do nothing.' :
            $translated_text = __('That email address has already been assigned to an account. Do you already have an account? Please contact site administrators or try again');
            break;
    }

    return $translated_text;
}

    You know a string is translatable if it’s enclosed in the __() function. So in your case you would add the following:

    case 'Hi, You've been invited to join '%1$s' at
%2$s as a %3$s. If you do not want to join this site please ignore
this email. This invitation will expire in a few days. Please click the following link to activate your user account: %%s' :
    $translated_text = __('Whatever you want the email to say', 'gqa');
    break;