WhatsApp Business API

WhatsApp Business for Hospitality: Guest Messaging, Costs and Setup

WhatsApp Business hospitality guide: how hotels, airlines and venues message guests across the stay, what it costs, and how to run it on one Telnyx number.

By Serhii Omelchenko

WhatsApp Business for Hospitality: Guest Messaging, Costs and Setup

Takeaways

WhatsApp Business lets you confirm bookings, answer guest requests and take guests' calls in the app they already use, on the number you already own, at Meta's per-message rate plus a Telnyx fee from $0.004.

Your messages follow the stay: a confirmation and a check-in link before arrival, requests during it, the invoice and a review request after checkout.
Each message has a Meta category: a utility, marketing or authentication template you send first, or a service reply after the guest has written to you. Since October 1, 2026 you pay for service replies after the first 1,000 per number each month, and for utility templates even inside the 24-hour window.
On Telnyx you pay a platform fee from $0.004 per message, Meta's fee arrives on the same invoice, and guests' WhatsApp calls ring on the phone system you already have.

How WhatsApp Business works in hospitality, from booking to checkout

Most of your guests already have WhatsApp: more than 3 billion people use it every month, Meta said in April 2025. With WhatsApp Business you message them from a verified number that shows your hotel's name, and they reply, or call, in the same chat. Here is how that works at each stage of a stay.

Each message of a stay has a Meta category: utility, service or marketing.

Confirmations, check-in links and reminders before arrival

Your first WhatsApp message goes out the moment a guest books. Send the booking confirmation straight away, then a check-in link a day or two before they arrive. Meta calls both of these utility templates: you write the message once, Meta approves it, and you can then send it without waiting for the guest to write to you. Because you start the conversation, you need the guest's permission first, so add an opt-in checkbox to your booking engine or ask at the desk, as the WhatsApp Business Messaging Policy requires. If you also run a restaurant, a reservation reminder works the same way, as covered in WhatsApp for restaurants. Bookings that come through an online travel agency (OTA) often arrive without the guest's phone number, so ask for the number and the opt-in on your pre-arrival page or in your first SMS.

Here is the whole stay in one table. Two things decide what Meta charges you for each message: its category, and whether the guest has written to you in the last 24 hours.

One hotel stay, message by message, with its Meta category and window status

Stay moment and message	Who starts it and Meta category	Inside the 24-hour window and what it means for the bill
Booking confirmation	Hotel, utility template	Outside, billed at the utility rate
Pre-arrival check-in link	Hotel, utility template	Outside, billed
Guest asks for early check-in	Guest, user message	Free, opens the window
Staff reply about the room	Hotel, service message	Inside, free up to 1,000 service messages per number per month, billed from the 1,001st
Spa or late check-out offer	Hotel, marketing template, needs marketing opt-in	Billed at the marketing rate in or out of the window
Urgent request as a WhatsApp call	Guest, call to the Telnyx number	Rings on your existing phone system
Check-out invoice	Hotel, utility template	Billed even inside the window since October 1, 2026
Review request	Hotel, utility template	Billed
Repeat-booking offer	Hotel, marketing template	Billed

If a guest isn't on WhatsApp, send the same message by SMS or email from the same number. The after-checkout stage below shows how.

The most common problem before arrival is a wrong number: the guest typed a landline or a relative's mobile into the booking form, and your check-in link goes to a stranger. You can prevent it by sending a one-time code over WhatsApp with the Telnyx Verify API and sending the link only once the guest confirms it. If you have a developer, these are the two requests it takes, the first to send the code and the second to check it:

Python

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import osimport timeimport requestsAPI_BASE = "https://api.telnyx.com/v2"TELNYX_API_KEY = os.environ["TELNYX_API_KEY"]VERIFY_PROFILE_ID = os.environ["VERIFY_PROFILE_ID"]verifications = {}phone = "+15557654321"resp = requests.post(    f"{API_BASE}/verifications/whatsapp",    headers={"Authorization": f"Bearer {TELNYX_API_KEY}", "Content-Type": "application/json"},    json={"phone_number": phone, "verify_profile_id": VERIFY_PROFILE_ID},    timeout=10,)code = input("Code the guest received: ")resp = requests.post(    f"{API_BASE}/verifications/by_phone_number/{phone}/actions/verify",    headers={"Authorization": f"Bearer {TELNYX_API_KEY}", "Content-Type": "application/json"},    json={"code": code, "verify_profile_id": VERIFY_PROFILE_ID},    timeout=10,)if resp.ok and resp.json().get("data", {}).get("response_code") == "accepted":    verifications[phone] = {"status": "verified", "verified_at": time.time()}

Requests, upsells and calls during the stay

The stay is where WhatsApp earns its keep. When a guest writes to you, a 24-hour customer service window opens, and your front desk can reply in plain text with no template. Guests ask for extra towels, a later check-out or a table for dinner, and your team answers in the chat. Upsells are the exception: a spa slot or a late check-out offer counts as marketing, so it needs a marketing template and the guest's marketing opt-in, even if they wrote first.

When something is urgent, guests can call your WhatsApp number straight from the chat. The call rings on the phone system you already use, through your SIP, Voice API or TeXML connection. At 3 a.m. it goes wherever your night line rings, or to a Telnyx AI Assistant that answers WhatsApp calls today and can log a maintenance request or wake the duty manager.

Each department at your hotel sends its own kind of message, and most of them are utility templates.

The core WhatsApp message for each hotel department

Department	Core WhatsApp message	Meta category
Reservations	Booking confirmation	Utility
Front desk	Room-ready message on arrival day	Utility
Restaurant	Reservation reminder	Utility
Housekeeping	Reply to a towel or pillow request	Service
Spa	Treatment offer to opted-in guests	Marketing
Concierge	Reply to a dinner or taxi request	Service

Plan an SMS or email version of each one for guests who aren't on WhatsApp, when you write the template rather than after the first message fails.

Staffing rule: Give each stage one owner. Reservations owns the chat before arrival, the front desk during the stay, and a night manager or a Telnyx AI Assistant on WhatsApp calls overnight. Set a reply time your desk can keep, such as 15 minutes during the day: an unanswered WhatsApp message sits on the guest's lock screen in a way an unanswered email never does.

Invoices, reviews and repeat bookings after checkout

The conversation doesn't end at checkout. Send the invoice and a review request within hours of departure, while the stay is fresh; both are utility templates. A repeat-booking offer three months later is a marketing template, so send it only to guests who opted in to marketing. Two kinds of guests need different handling. If a guest gave you a landline, a number lookup catches it before your first template, so you can switch to email. If a guest never replies on WhatsApp, send your next message by SMS from the same Telnyx number instead of a third template into a silent chat.

If your team builds its own integration, the whatsapp-sms-bridge-python example, checked against the Telnyx SDK, shows how. It forwards a WhatsApp message over SMS, and back, from the same number. These are the two send functions and the forwarding step:

Python

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import osimport requestsTELNYX_API_KEY = os.environ["TELNYX_API_KEY"]MESSAGING_PROFILE_ID = os.environ["MESSAGING_PROFILE_ID"]SMS_NUMBER = os.environ["SMS_NUMBER"]WHATSAPP_NUMBER = os.environ["WHATSAPP_NUMBER"]def send_sms(to, text):    resp = requests.post("https://api.telnyx.com/v2/messages",        headers={"Authorization": f"Bearer {TELNYX_API_KEY}", "Content-Type": "application/json"},        json={"from": SMS_NUMBER, "to": to, "text": text, "messaging_profile_id": MESSAGING_PROFILE_ID}, timeout=10)    return resp.okdef send_whatsapp(to, text):    resp = requests.post("https://api.telnyx.com/v2/messages",        headers={"Authorization": f"Bearer {TELNYX_API_KEY}", "Content-Type": "application/json"},        json={"from": WHATSAPP_NUMBER, "to": to, "text": text, "messaging_profile_id": MESSAGING_PROFILE_ID, "type": "whatsapp"}, timeout=10)    return resp.okfrom_number = "+15557654321"text = "Can I check out at noon?"bridge = {"direction": "whatsapp_to_sms", "sms": "+15551234567"}if bridge.get("direction") == "sms_to_whatsapp":    success = send_whatsapp(bridge["whatsapp"], f"[SMS from {from_number}] {text}")elif bridge.get("direction") == "whatsapp_to_sms":    success = send_sms(bridge["sms"], f"[WhatsApp from {from_number}] {text}")

If you run more than one hotel, give each its own local number so guests see a local country code; Telnyx has local numbers in 130+ countries. To keep your current front-desk number, import it with Bring Your Own Number, and guests keep the number they already saved. For guests who aren't on WhatsApp, SMS or RCS (Rich Communication Services) from the same number is the fallback, and RCS messaging pricing covers what that costs. Hotels in the European Union have their own opt-in and data rules, covered in WhatsApp Business in Europe. For published results from hotel brands, see Meta's success stories.

Try the WhatsApp Business API on the number your front desk already answers, from $0.004 per message with Meta's fee on the same invoice.

WhatsApp Business pricing for hospitality: what a guest stay costs

Since October 1, 2026 Meta charges for service messages, your free-form replies, once a number passes 1,000 in a month. The allowance doesn't roll over, and you pay from the 1,001st. Utility templates you send inside the 24-hour window are now billed at the utility rate too; they used to be free. If you use Meta Business Agent, Meta's own AI, you pay $2.00 per 1M tokens, about 4 to 5 cents a message, with no free tier. Replies written by your staff or by a third-party AI such as a Telnyx AI Assistant are service messages, so they count toward the free 1,000 instead. Meta charges the same with every provider. On Telnyx you add a platform fee from $0.004 per message, lower as your volume grows, and both arrive on one invoice.

What will each guest message cost after October 1?

Guest messaged you in the last 24 hours: send a service reply. The first 1,000 per number each month carry no Meta fee, and replies beyond that are billed.
Booking confirmation inside the window: budget for a utility template fee. Since October 1, 2026 utility templates sent inside the 24-hour window are billed too.
Late-checkout offer to past guests: use a marketing template. Promotions need their own Meta category, billed per message plus the Telnyx platform fee from $0.004.
Login code for the guest app: send an authentication template. One-time codes are a separate Meta category, billed per message on top of the Telnyx fee.
Want Meta and platform fees on one bill: send through Telnyx. The platform fee starts at $0.004 per message and Meta's charge appears on the same invoice.

Do you need the free WhatsApp Business App or the paid API?

WhatsApp gives you two options: a free phone app for one person running one business, and a paid API that your booking software and your whole team can use on one number. The table shows where the free app runs out once you have a front desk.

What a hotel needs from WhatsApp, app versus API on Telnyx

What a hotel needs	WhatsApp Business App	WhatsApp Business API on Telnyx
Devices	One phone plus four linked	Any number of agents and systems through the API
Broadcasts	At most 256 saved contacts	Meta-approved templates to opted-in guests
Message templates	None	Created and submitted for Meta approval from Mission Control
Voice calls on the same number	App calls only	Inbound and outbound WhatsApp calls routed to the existing SIP, Voice API or TeXML connection
Price	Free app	Meta's per-message rate plus a Telnyx platform fee from $0.004 per message, on one invoice

Rule of thumb: If two people ever need to answer your WhatsApp number at once, if your property management system (PMS) should send messages, or if you need to reach guests who haven't saved your number, you need the API. The app suits a small property where one person holds the phone.

You get the API through a Business Solution Provider (BSP) such as Telnyx, and the number stays yours. Many BSPs put WhatsApp on a separate number with a separate bill, which is the setup most hotel teams want to leave; choosing a WhatsApp provider lays out what to compare.

What a guest stay costs, message by message

Because you pay per message, you can add up a whole stay. The rates below are Meta's North America rates from its July 1, 2026 rate card, under the October 1, 2026 rules, with the Telnyx fee from $0.004 added to each.

One US guest stay on WhatsApp, Meta rate plus Telnyx fee

Message in the stay	Meta category	Cost per message (Meta rate + Telnyx fee from $0.004)
Booking confirmation	Utility template	$0.0034 + $0.004 = $0.0074
Pre-arrival check-in link	Utility template	$0.0074
Guest's question	User message	No Meta fee
Three staff replies	Service, inside the window	No Meta fee within the first 1,000 service messages per number per month, charged from the 1,001st. Telnyx fee from $0.004 each
Late-check-out offer	Marketing template	$0.0250 + $0.004 = $0.0290
Check-out invoice	Utility template, billed even inside the window since October 1	$0.0074
Review request	Utility template	$0.0074
Total per guest	Four utility, one marketing, three service	About $0.071 (utility $0.0296 + marketing $0.0290 + service $0.012 Telnyx fee), all on one invoice

Meta's rates differ by country: UK utility is $0.0220 and India utility and authentication are $0.0014, and the full rate card is in our WhatsApp Business API cost guide. Two more things affect your bill. When a guest taps one of your Click to WhatsApp ads in the mobile app, a free entry point window opens and every message in it is free except Meta Business Agent messages. And if your Messaging account has no payment method on file, service messages stop delivering once you pass the free 1,000, so add a card before your busy month.

How to set up the WhatsApp Business API on Telnyx

You connect WhatsApp in Mission Control in three steps, then add your templates. You don't need a developer for any of it, and your existing number can be the one that goes live.

WhatsApp calls ring on your existing SIP, Voice API or TeXML connection, with no extra setup.

Connect your WhatsApp Business Account in three steps

Here are the three steps:

Connect your WhatsApp Business Account (WABA). In Mission Control go to WhatsApp, then Connect, and select your WhatsApp Business Account through Meta's Embedded Signup. Meta business verification happens here, without leaving the portal.
Verify your number. Pick an active Telnyx number, or a number imported with Bring Your Own Number, and enter the verification code Meta sends to confirm ownership.
Toggle WhatsApp Calling on, assign the number to a Telnyx AI Assistant if you want one answering, then create and submit your first message template.

To keep your current front-desk line, import it with Bring Your Own Number: it works with the WhatsApp Business API exactly like a number bought from Telnyx, calls included.

How to manage message templates on the WhatsApp Business Platform

You create templates in Mission Control and submit them to Meta for approval from the same screen. Meta has three template categories: authentication, utility and marketing. Your free-form replies inside the 24-hour window are service messages and need no template. Four templates get a hotel started: booking confirmation (utility), pre-arrival check-in link (utility), late check-out offer (marketing) and review request (utility). One tip saves money: if you put marketing wording in a utility template, such as a discount line on the invoice, Meta re-categorises it and charges you the marketing rate of $0.0250 instead of $0.0034.

Once a template is approved, your system sends it with one request. This is the request from our product page, set up as a booking confirmation with the guest's first name and booking reference:

Shell

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curl -X POST https://api.telnyx.com/v2/messages/whatsapp \  -H "Authorization: Bearer YOUR_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "from": "+15551234567",    "to": "+15557654321",    "whatsapp_message": {      "type": "template",      "template": {        "name": "booking_confirmation",        "language": { "policy": "deterministic", "code": "en_US" },        "components": [          { "type": "body", "parameters": [            {"type": "text", "text": "Maria"},            {"type": "text", "text": "BK-48213"}          ] }        ]      }    }  }'

Run guest communications on the Telnyx platform

The result is one number for four channels: phone calls, SMS, WhatsApp messages and WhatsApp calls, with one set of analytics. WhatsApp calls your hotel places are billed per minute, pay as you go, with no monthly subscription. Calls guests place to you ring through your existing SIP, Voice API or TeXML connection, so if you already use business SIP trunking, a WhatsApp call rings on the same desk phones as any other call. Meta's fees and the Telnyx platform fee arrive on one invoice, the line most teams were missing when WhatsApp sat with a second vendor.

Build or buy on top: The number and the WhatsApp Business Account are yours, so your PMS can call the API directly or any inbox tool can sit on top. Meta charges the same with every provider, so when you compare providers, compare the platform fee, the channels that share your number, and the analytics.

FAQ

Can I run WhatsApp alongside SMS, RCS and voice on one platform instead of adding another vendor?

Yes. On Telnyx one number carries phone calls, SMS, WhatsApp messages and WhatsApp calls, and the same account handles RCS and email. WhatsApp calls ring through the SIP, Voice API or TeXML connection you already use, and Meta's fees and the Telnyx platform fee arrive on one invoice.

Are my guests already on WhatsApp?

Most likely. More than 3 billion people use WhatsApp every month, so if you host international guests, most of them have it. The share varies by country, and US guests are the most likely to be missing, which is why you keep SMS from the same number as the fallback.

What is the 24-hour rule for WhatsApp Business?

When a guest messages you, a 24-hour customer service window opens. Inside it your staff can reply with free-form messages, no template needed. Those replies are service messages: free up to 1,000 per number per month, billed after that. Outside the window you can only send an approved template, and since October 1, 2026 utility templates sent inside the window are billed too.

How much does WhatsApp Business cost per hotel guest?

For a US guest, about $0.071 per stay on Telnyx: four utility templates at $0.0034 each, one marketing template at $0.0250 and three service replies with no Meta fee inside your first 1,000 a month, each plus the Telnyx platform fee from $0.004. Meta's rates differ by country, and the Telnyx fee falls as your volume grows.

Is WhatsApp Business compliant with GDPR and guest privacy?

WhatsApp's Business Messaging Policy requires the guest's opt-in before you send any template, and marketing templates need a separate marketing opt-in. You remain the data controller for the guest records you hold, so handle opt-ins, retention and deletion requests in your booking engine and PMS, and store the opt-in timestamp on the guest profile.

What are the limitations of the free WhatsApp Business App for a hotel?

One phone plus four linked devices, broadcasts to at most 256 saved contacts, no message templates and no link to your PMS. Two staff can't answer the number at the same time, and you can't reach guests who haven't saved your number. Once you have a front desk or a second location, you need the API.

Can I use WhatsApp Business in multiple languages?

Yes. You submit each template with a language code, en_US in the request above, and one template name can hold several language versions. Your booking engine records the guest's language and the send request picks the matching code, so a German guest gets the confirmation in German from the same number.

Price every guest message and keep one number

Send every WhatsApp message of a stay, and take guests' calls, on the number you already own, from $0.004 per message with Meta's fee on the same invoice and no second messaging vendor.

Connect your WhatsApp number

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Serhii Omelchenko

Global AEO/SEO Manager

Serhii is Global AEO/SEO Manager at Telnyx, based in Amsterdam, he is focused on making communications infrastructure findable and credible across both traditional search and AI-driven discovery. He previously led SEO and GEO strategy for some of the world’s most recognized consu