wp-includes/ms-functions.php:1637$blog_idint$user_idint$passwordstring$titlestring$metaarrayoptionalarray()bool3 hooks fire while wpmu_welcome_notification() runs, in this order:
Filters whether to bypass the welcome email sent to the site administrator after site activation.
Filters the content of the welcome email sent to the site administrator after site activation.
Filters the subject of the welcome email sent to the site administrator after site activation.
function wpmu_welcome_notification( $blog_id, $user_id, #[\SensitiveParameter] $password, $title, $meta = array()) { $current_network = get_network(); /** * Filters whether to bypass the welcome email sent to the site administrator after site activation. * * Returning false disables the welcome email. * * @since MU (3.0.0) * * @param int|false $blog_id Site ID, or false to prevent the email from sending. * @param int $user_id User ID of the site administrator. * @param string $password User password, or "N/A" if the user account is not new. * @param string $title Site title. * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ if ( ! apply_filters( 'wpmu_welcome_notification', $blog_id, $user_id, $password, $title, $meta ) ) { return false; } $user = get_userdata( $user_id ); $switched_locale = switch_to_user_locale( $user_id ); $welcome_email = get_site_option( 'welcome_email' ); if ( ! $welcome_email ) { /* translators: Do not translate USERNAME, SITE_NAME, BLOG_URL, PASSWORD: those are placeholders. */ $welcome_email = __( 'Howdy USERNAME, Your new SITE_NAME site has been successfully set up at:BLOG_URL You can log in to the administrator account with the following information: Username: USERNAMEPassword: PASSWORDLog in here: BLOG_URLwp-login.php We hope you enjoy your new site. Thanks! --The Team @ SITE_NAME' ); } $url = get_blogaddress_by_id( $blog_id ); $welcome_email = str_replace( 'SITE_NAME', $current_network->site_name, $welcome_email ); $welcome_email = str_replace( 'BLOG_TITLE', $title, $welcome_email ); $welcome_email = str_replace( 'BLOG_URL', $url, $welcome_email ); $welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email ); $welcome_email = str_replace( 'PASSWORD', $password, $welcome_email ); /** * Filters the content of the welcome email sent to the site administrator after site activation. * * Content should be formatted for transmission via wp_mail(). * * @since MU (3.0.0) * * @param string $welcome_email Message body of the email. * @param int $blog_id Site ID. * @param int $user_id User ID of the site administrator. * @param string $password User password, or "N/A" if the user account is not new. * @param string $title Site title. * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ $welcome_email = apply_filters( 'update_welcome_email', $welcome_email, $blog_id, $user_id, $password, $title, $meta ); $admin_email = get_site_option( 'admin_email' ); if ( '' === $admin_email ) {Introduced in MU (3.0.0). Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ms-functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.