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

1909	 * @since MU (3.0.0)1910	 *1911	 * @param int    $user_id  User ID.1912	 * @param string $password User password.1913	 * @param array  $meta     Signup meta data. Default empty array.1914	 */1915	if ( ! apply_filters( 'wpmu_welcome_user_notification', $user_id, $password, $meta ) ) {1916		return false;1917	}1918 1919	$welcome_email = get_site_option( 'welcome_user_email' );1920 1921	$user = get_userdata( $user_id );