Ticket #40477: 40477.diff

src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php

@@ -605 +605 @@
                         if ( is_wp_error( $user_id ) ) {
                                 return $user_id;
                         }
+
+                        /**
+                         * Filters whether the notified of a new user registration.
+                         *
+                         * @param string $notify     Type of notification that should happen. Accepts 'admin' or an empty
+                         *                           string (admin only), 'user', or 'both' (admin and user). Default 'admin'.
+                         *                           You can set 'false' to stop notification for both.
+                         * @param int    $user_id    User ID.
+                         *
+                         */
+                        $notify = apply_filters( 'rest_wp_user_created_notification', $notify = 'admin', $user_id ); 
+
+                        if ( $notify && $notify != 'false' ) {
+                                wp_new_user_notification( $user_id, null, $notify );
+                        }
                 }
 
                 $user = get_user_by( 'id', $user_id );