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

1931	 *1932	 * @param string $welcome_email The message body of the account activation success email.1933	 * @param int    $user_id       User ID.1934	 * @param string $password      User password.1935	 * @param array  $meta          Signup meta data. Default empty array.1936	 */1937	$welcome_email = apply_filters( 'update_welcome_user_email', $welcome_email, $user_id, $password, $meta );1938	$welcome_email = str_replace( 'SITE_NAME', $current_network->site_name, $welcome_email );1939	$welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email );1940	$welcome_email = str_replace( 'PASSWORD', $password, $welcome_email );1941	$welcome_email = str_replace( 'LOGINLINK', wp_login_url(), $welcome_email );1942 1943	$admin_email = get_site_option( 'admin_email' );