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

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' );