---
title: "What an official account is for, and what it is emphatically not"
description: "The channel is built around a person adding a business as a friend, which makes it the most permission-shaped surface in messaging — and the least forgiving of a shop that treats the follower list as a mailing list."
last_updated: 2026-09-20
---

# What an official account is for, and what it is emphatically not

Source: https://line.demo.busymate.ai/channel

> The channel is built around a person adding a business as a friend, which makes it the most permission-shaped surface in messaging — and the least forgiving of a shop that treats the follower list as a mailing list.

## What an official account is for, and what it is emphatically not

The channel is built around a person adding a business as a friend, which makes it the most permission-shaped surface in messaging — and the least forgiving of a shop that treats the follower list as a mailing list.

### Adding a business is an act, and so is removing one

Somebody scans a code or taps a link to add the account, and they can block it in two taps from the same screen they use for their friends. Nothing about this channel lets a business arrive uninvited, which is why what gets sent has to be worth the tap.

### Broadcasts are metered, replies are not

Pushing a message to every follower is counted and charged; answering somebody who wrote first is not. The economics point exactly where the manners already did — send rarely, answer quickly.

### Rich menus do more than a paragraph

The channel carries a persistent menu and structured cards under the keyboard, so 'which notices am I on' becomes a tap rather than a sentence — and an assistant here should be reaching for those instead of writing lists.

### The preview on the home page

A preview: the LINE thread is drawn in this site's own CSS. No official account is linked and nothing here reaches LINE.

The device drawn there is this site's own CSS — a header, a composer and a
screen — and the screen is a SLOT. When you tap one of the quick replies, the
live assistant opens **inside it** and answers you there. Nothing in that frame
is a scripted conversation: there is no pre-written customer turn and no canned
reply, because a transcript nobody generated would be the page telling you
something about the product that is not true.

- There is no LINE official account behind this page. Nothing here is broadcast, nothing is added to anybody's friend list, and no LINE service is contacted at any point.
- Tsukumo Camera is an invented shop. The address, the telephone number, the email, the staff, the stock, the prices and the subscriptions are all fictional — nothing here dials or reaches anybody.
- Subscription changes made here live in memory until this demo restarts. No list is written to and nobody is sent anything.

### What changes on the day the channel goes live

One field. This site serves a small configuration file with a single
`basicId` value, `null` today. Set it once an official account exists; the CTA becomes a genuine line.me link. The page
reads it at runtime, so the same build switches from an honest preview to a
working LINE link with nothing rebuilt and nothing rewritten.


## Sitemap

Every page on this site: [sitemap.md](https://line.demo.busymate.ai/sitemap.md)