apply_filters( 'wpmu_welcome_user_notification', int $user_id, string $password, array $meta )

1891	 * @since MU (3.0.0)1892	 *1893	 * @param int    $user_id  User ID.1894	 * @param string $password User password.1895	 * @param array  $meta     Signup meta data. Default empty array.1896	 */1897	if ( ! apply_filters( 'wpmu_welcome_user_notification', $user_id, $password, $meta ) ) {1898		return false;1899	}1900 1901	$welcome_email = get_site_option( 'welcome_user_email' );1902 1903	$user = get_userdata( $user_id );