wpmu_welcome_user_notification( int $user_id, string $password, array $meta = array() ): bool

1878function wpmu_welcome_user_notification(1879	$user_id,1880	#[\SensitiveParameter]1881	$password,1882	$meta = array()1883) {1884	$current_network = get_network();1885 1886	/**1887	 * Filters whether to bypass the welcome email after user activation.1888	 *1889	 * Returning false disables the welcome email.1890	 *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 );1904 1905	$switched_locale = switch_to_user_locale( $user_id );1906 1907	/**1908	 * Filters the content of the welcome email after user activation.1909	 *1910	 * Content should be formatted for transmission via wp_mail().1911	 *1912	 * @since MU (3.0.0)1913	 *1914	 * @param string $welcome_email The message body of the account activation success email.1915	 * @param int    $user_id       User ID.1916	 * @param string $password      User password.1917	 * @param array  $meta          Signup meta data. Default empty array.1918	 */1919	$welcome_email = apply_filters( 'update_welcome_user_email', $welcome_email, $user_id, $password, $meta );1920	$welcome_email = str_replace( 'SITE_NAME', $current_network->site_name, $welcome_email );1921	$welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email );1922	$welcome_email = str_replace( 'PASSWORD', $password, $welcome_email );1923	$welcome_email = str_replace( 'LOGINLINK', wp_login_url(), $welcome_email );1924 1925	$admin_email = get_site_option( 'admin_email' );1926 1927	if ( '' === $admin_email ) {1928		$admin_email = 'support@' . wp_parse_url( network_home_url(), PHP_URL_HOST );1929	}1930 1931	$from_name       = ( '' !== get_site_option( 'site_name' ) ) ? esc_html( get_site_option( 'site_name' ) ) : 'WordPress';1932	$message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . 'Content-Type: text/plain; charset="' . get_option( 'blog_charset' ) . "\"\n";1933	$message         = $welcome_email;1934 1935	if ( empty( $current_network->site_name ) ) {1936		$current_network->site_name = 'WordPress';1937	}1938 1939	/* translators: New user notification email subject. 1: Network title, 2: New user login. */1940	$subject = __( 'New %1$s User: %2$s' );1941 1942	/**1943	 * Filters the subject of the welcome email after user activation.1944	 *1945	 * @since MU (3.0.0)1946	 *1947	 * @param string $subject Subject of the email.1948	 */1949	$subject = apply_filters( 'update_welcome_user_subject', sprintf( $subject, $current_network->site_name, $user->user_login ) );1950 1951	wp_mail( $user->user_email, wp_specialchars_decode( $subject ), $message, $message_headers );1952 1953	if ( $switched_locale ) {1954		restore_previous_locale();1955	}1956 1957	return true;