apply_filters( 'update_welcome_email', string $welcome_email, int $blog_id, int $user_id, string $password, string $title, array $meta )

1724	 * @param int    $blog_id       Site ID.1725	 * @param int    $user_id       User ID of the site administrator.1726	 * @param string $password      User password, or "N/A" if the user account is not new.1727	 * @param string $title         Site title.1728	 * @param array  $meta          Signup meta data. By default, contains the requested privacy setting and lang_id.1729	 */1730	$welcome_email = apply_filters( 'update_welcome_email', $welcome_email, $blog_id, $user_id, $password, $title, $meta );1731 1732	$admin_email = get_site_option( 'admin_email' );1733 1734	if ( '' === $admin_email ) {1735		$admin_email = 'support@' . wp_parse_url( network_home_url(), PHP_URL_HOST );1736	}