LINE isn't a messaging app here

More than 50 million Thais use LINE — over two-thirds of the population, with reach figures around 54 million.

Eighty-four out of every hundred Thai internet users are on it. Average time in the app is around 63 minutes a day.

At that level of penetration, the useful comparison isn’t WhatsApp. Nothing in the West occupies this position.

LINE in Thailand is the interface. Not one app among several — the layer through which a large share of the country does its messaging, its work, its shopping, its government admin and its customer service.

What it actually replaces

In Britain you’d use WhatsApp for friends, email for work, a bank app for money, a government website for admin, and a phone call for customer service.

Here, all of that is LINE.

Personal messaging, obviously.

Work. Not supplementary to email — instead of it. Teams, projects, files, approvals and decisions live in group chats. A foreigner who insists on email is not being rigorous; they are being unreachable.

Business. LINE Official Accounts are how companies talk to customers. Your gym, your condo management, your insurance agent, your local restaurant — all LINE OAs, all in your friends list.

Government. Agencies run official LINE accounts as a primary public-facing channel.

Payment, news, shopping, delivery. All in there.

If you are not on LINE in Thailand, you are not contactable. That is not an exaggeration and it is the first thing anyone moving here should be told.

Why LINE and not the others

Partly timing — it arrived early, around 2012, and reached critical mass before the alternatives.

Partly stickers, which sound trivial and are not. Stickers are a genuine communication mode here, not decoration, and I’ll come back to why that matters more than it looks.

And partly because it kept adding layers — payments, official accounts, commerce — so leaving became progressively more expensive. Once your bank, your landlord, your doctor and your mother are all in one app, that app has effectively won.

The part I think is actually interesting

Here’s the connection nobody makes, and it’s the reason this belongs on this site rather than in a marketing blog.

LINE’s interaction model fits kreng jai almost perfectly.

Article 49 described the mechanism: an active reluctance to place a burden on another person, and an instinct to absorb interpersonal cost rather than transfer it.

Now consider what a phone call is, under that norm. It’s a demand for immediate attention, requiring an immediate response, in which a refusal must be delivered in real time to a person who is listening. It’s maximum cost transfer.

Asynchronous messaging removes all of it:

You can compose. A difficult message can be drafted, softened and reconsidered before anyone receives it.

They can not respond immediately. No obligation to produce an answer on the spot.

And a sticker can acknowledge without committing. This is the genuinely elegant part. A sticker registers that you’ve seen something, conveys warmth, and commits to precisely nothing. In a culture that avoids explicit refusal, a communication mode that lets you respond meaningfully without saying anything is not a novelty. It’s a solution.

I don’t think LINE designed for this. But the fit is close enough that it’s worth noticing — a technology that lets you be present without imposing, and responsive without committing, in a country where both of those are the point.

What it costs

Now the part Thai workers complain about, and it’s real.

There is no boundary. Work is in the same app as your mother, your friends and your food delivery. The group chat does not close at six. Messages arrive at eleven at night from someone senior and the norm described in article 49 makes not answering them expensive.

Kreng jai and always-on messaging are a difficult combination. The same instinct that makes you reluctant to impose also makes you reluctant to be the person who didn’t reply. So you reply.

This is discussed openly in Thailand and it’s a genuine quality-of-life issue, particularly for younger workers who watched their parents’ generation adopt it without ever agreeing to it.

And it makes information ephemeral. Decisions made in a group chat are decisions with no record anyone can search, no thread anyone can follow, and no version anyone can cite. Anyone who has tried to reconstruct why something was agreed six months ago in a Thai workplace knows the specific despair involved.

For foreigners here

Get LINE before you get a bank account. More things depend on it.

Accept that work happens there. Insisting on email marks you as difficult and reduces the information reaching you — which is the same failure mode article 49 described for insisting on directness.

Use stickers. Genuinely. Refusing to is read as coldness, and they do real communicative work.

And set your own boundary carefully. You can decline to answer at midnight, but do it by establishing a pattern rather than announcing a policy — announcing policies is precisely the high-cost move article 49 warns against.

Common misconceptions

“It’s just WhatsApp with cartoons.” It’s the messaging, commerce, government and payment layer for two-thirds of a country.

“Stickers are for teenagers.” They’re used at every age and in professional contexts, and they do specific communicative work.

“Businesses use it because they’re small.” Major companies, banks and government agencies run LINE Official Accounts as primary channels.

“I can just use email.” You can. You will receive less information, later, and be thought slightly difficult.

“It won.” It arrived early, kept adding layers, and became too expensive to leave. Timing and lock-in did as much as design.