WhatsApp Business for Hotels: Getting Templates and Opt-in Right

For most guests WhatsApp is the most natural communication channel there is – read faster than any email, more personal than a call. For hotels that's an opportunity, but not a free ride. WhatsApp Business follows strict rules that define when a hotel may write on its own initiative and when not. Ignore those rules and you risk blocked messages or, in the worst case, the number being banned.

The two message types that govern everything

At the heart of the WhatsApp Business system are two fundamentally different message types:

• Template messages are pre-submitted, WhatsApp-approved templates. Only these may a hotel send proactively – that is, when the guest hasn't just written themselves. Booking confirmation, check-in reminder, door code at arrival: all template cases.
• Free-text messages (session messages) are arbitrary text, but only allowed within an open conversation window.

This distinction isn't bureaucratic for its own sake, but the mechanism by which WhatsApp prevents spam. Ignore it and you technically won't get through.

The 24-hour window

The moment a guest writes to the hotel, a 24-hour window opens. Within that window the hotel may reply freely with free text – completely normally, as in a private chat. If the guest replies again, the window starts over.

Once the window is closed (more than 24 hours since the last guest message), the hotel may only write again with an approved template message. That's the most common stumbling block: a spontaneous "Looking forward to seeing you tomorrow!" two days before arrival fails if no template exists for it.

In practice that means: everything planned and time-triggered – confirmations, reminders, codes – must exist as a template. The real dialogue runs in the open window via free text.

Opt-in: nothing works without it

Before a hotel may write proactively at all, it needs the guest's consent (opt-in). That's not only a WhatsApp rule but also required under data-protection law (GDPR). The opt-in must be clear and demonstrable – for instance a deliberately ticked box in the booking process or explicit agreement to be contacted via WhatsApp.

Important: an existing phone number is not an opt-in. Just because a guest left a mobile number when booking doesn't mean the hotel may automatically message them on WhatsApp. The consent must relate specifically to the WhatsApp channel.

Templates worth having

Not every message needs a template – but the recurring, plannable ones do. For hotels the following prove their worth above all:

1. Booking confirmation right after booking – with the key details.
2. Check-in reminder on the arrival day – with directions, check-in time and contact.
3. Door code / self-check-in info at arrival – especially for properties without a permanently staffed reception.
4. Follow-up after the stay – a friendly thank-you, a request for a review, a note about direct booking next time.

Each template is submitted once, reviewed by WhatsApp and then available any number of times. The effort happens once, the benefit repeats with every booking.

Using the AI assistant correctly

In the open 24-hour window an AI assistant can answer simple guest questions directly – breakfast times, parking, Wi-Fi password. The boundary is decisive: answer the simple things itself, escalate complaints and sensitive cases to a human. That preserves speed without a bot misfiring on a delicate situation. The template rules apply unchanged – the assistant, too, may only go proactive outside the window via a template.

Conclusion

WhatsApp is a strong channel for hotels, but not a lawless one. Understand the two message types, the 24-hour window and the opt-in obligation and you use it safely: planned messages as approved templates, real dialogue as free text in the open window, and always only with the guest's demonstrable consent. Set up correctly, confirmations, reminders and door codes run automatically – over exactly the channel the guest prefers anyway.