LINE, WhatsApp or WeChat: where Southeast Asian guests actually write

Every host in Southeast Asia has had this moment: a guest asks "do you have LINE?" or "can I WhatsApp you?" and suddenly the conversation lives in two places. Then a guest from Shanghai asks for WeChat, and it is three. This page sorts out who uses what, where guest messages should live, and how to keep one answer across all of it.

Who uses which app

The region is not one market. Roughly:

So a Bangkok host sees LINE from Thai and Japanese guests, WhatsApp from almost everyone else, and WeChat from mainland Chinese guests. A Bali host sees WhatsApp from Indonesians, Australians and Europeans, with WeChat for Chinese groups. A KL host sees WhatsApp first, then WeChat.

Where guest messages should actually live

Here is the thing most new hosts miss: the guest already has a messaging thread with you. It is on the platform where they booked. Airbnb, Booking.com, Agoda and Vrbo all have one, and the guest already opened it to ask their first question.

Keeping the conversation there has real advantages:

• A record. If a dispute comes up, the platform can read the thread. A WhatsApp screenshot is weaker.
• Response time counts. Airbnb publishes your response rate and time. Messages that moved to LINE do not count.
• Translation. The platforms translate for the guest, imperfectly but usefully.
• Automation. Saved replies, scheduled messages and any AI tool work on the platform thread, not on your personal LINE.
• Your phone stays yours. A guest on your personal WhatsApp from 2024 is still there in 2026.

In short: guests are answered on the booking platform. Your team (cleaners, the handyman, the building manager) is on LINE or WhatsApp, because that is where they live.

When a chat app is still the right call

There are exceptions, and they are predictable:

• Arrival day. A guest in a Grab with a driver who cannot find the entrance needs a call or a quick voice note. Platform chat is slow for that. Give a phone number for arrival only.
• Agoda and some Booking.com guests often do not use the app conversation at all and expect a phone number like a hotel. Give one, then put the answer in writing on the platform afterwards.
• Group bookings from China sometimes have one organiser who speaks for ten people and lives on WeChat. Meet them there for logistics, keep the booking facts on the platform.
• Long stays. A guest staying two months becomes more like a tenant. A LINE thread is fine, but keep anything about money or dates on the platform.

The rule we use: say yes to the chat app for the arrival window, bring the conversation back to the platform for everything else.

What to say when a guest asks for your LINE or WhatsApp

Short and friendly, with a reason:

For WeChat:

For a guest who starts sending questions on WhatsApp after arrival:

Language is the bigger problem than the app

Hosts often think the app is the issue. It is not. The issue is that the guest writes in Thai, Mandarin, Korean, Russian or Bahasa, the host answers in English, and the platform's auto-translation turns "the hot water switch is outside the bathroom" into something slightly wrong. The guest reads a confused sentence, asks again, and the thread grows.

Two habits help:

1. Short sentences. Machine translation handles "Flip the switch outside the bathroom. Wait one minute. The shower will be hot." far better than one long sentence with a comma chain.
2. Pictures. A photo of the switch, the key card reader and the Grab pickup point needs no translation.

And the third, which changes the whole picture, is an answer written in the guest's language in the first place.

What an AI front desk changes

Tokay is an AI front desk for short-term rental hosts, built in Bangkok by a host who still runs apartments. It answers guests on Airbnb, Booking.com and Vrbo. It does not move guests to another app. Guests keep writing where they booked; nothing changes for them. A WhatsApp and LINE inbox for guests is coming soon, so hosts whose guests prefer those apps will be able to answer them from the same front desk.

What does change:

• Pam, the front desk agent, replies in the guest's own language. More than ten languages including Thai, Mandarin, Japanese, Korean, Russian, German, French and Spanish. A Japanese guest writes in Japanese at 3 AM and gets a correct Japanese reply built from your facts, not a translation of your English one.
• Your team stays on LINE. Sam, the operations agent, writes tomorrow's cleaning brief every night and reaches cleaners and contractors on LINE, because that is where they are. A late checkout approved on Airbnb updates the cleaner's brief automatically.
• The host stays in charge. For the first two weeks every reply comes to you to approve, edit or deny. Then you switch on what it may send on its own, one kind of question at a time. Anything unusual or upset always comes to you first.
• Nothing is made up. If a fact is not on file, Tokay asks you.

On our own apartments this meant every guest answered around the clock and about two taps a day of guest work left. Tokay connects in about ten minutes with nothing to install.

Questions hosts ask