WhatsApp Business for restaurants: why 98% of your messages are read within 5 minutes (and how Heep turns it into your #1 channel)
WhatsApp Business is your restaurant's highest-converting channel, if you reply. See how Heep handles inbound messages 24/7, in the guest's own language.
“Do you answer on WhatsApp?” is the first question we get in a demo, before anyone asks about integrations. It hides a more useful one: what exactly happens between the message landing and the table being written into the book?
We built the WhatsApp channel before Instagram and before email, for a reason of timing. It is the one with the shortest reply window: a WhatsApp message is opened within five minutes. Five minutes is also all it takes for a guest to go and message the restaurant next door.
What follows describes the whole chain: what Heep handles on its own, what it hands to your team, and the settings that stay in your hands. With a real conversation in the middle of it.
98 % of WhatsApp Business messages are opened within 5 minutes — vs 22% for a transactional restaurant email.
Why WhatsApp became guests’ #1 channel
A guest books at 10:47pm, right after their last drink of the night. Not by phone (you’re closed), not by email (they never will), not through a web form (too many steps). They send a WhatsApp message. And they expect a reply now.
The problem: your team reopens the conversation at 11am the next day. The guest has already booked somewhere else. A lost enquiry that never even shows up in your stats.
- 45% average response rate on WhatsApp Business vs 6% by email. (Meta — Business Messaging Report 2024)
- 2.5bn active WhatsApp users across 180 countries — including most of your international visitors. (Meta Platforms — 2024 Annual Report)
- 1,600 bookings/month automated by Heep at Noto Paris (Moma Group), across every conversational channel. (Noto Paris case study — Heep, 2026)
The segment hit hardest by this lag: premium and international guests. An American on a weekend in Paris, a London exec down for two nights — they will never pick up the phone to call a French number. They send a WhatsApp message. If it goes unanswered for 3 hours, they’re at your competitor’s table.
This article is for restaurateurs who want to bring every guest thread into a single inbox and stop losing covers to whoever replies faster.
Want to see Heep reply to a WhatsApp message in under 30 seconds? Watch Heep reply on WhatsApp live
What Heep actually does on WhatsApp Business
The simplest way in is to look at a real, anonymised exchange, captured on a Tuesday at 11:12pm from the WhatsApp Business number of a Paris bistro connected to Heep.
Hi! Do you have a table for 4 tomorrow at 8.30pm? Window if possible 🙏
Hi! Yes, we have a window table for 4 tomorrow Wednesday at 20:30. Can I confirm under the name and phone number you're writing from?
Perfect — Sarah Mitchell, this number is fine. Any veggie option on the menu?
Confirmed ✅ Sarah, table 12 (window), Wed 20:30, 4 guests. Veggie tasting menu available — chef can also adapt the à la carte. See you tomorrow! Reply STOP to cancel.
↳ Automatically synced with Zenchef · Day-before reminder scheduled · “International” tag applied in CRM
Behind the scenes, Heep: detected the language (English), checked availability in Zenchef, picked a window table, asked for identity confirmation, created the booking, scheduled a day-before reminder, and tagged the guest as international for future campaigns.
All without waking anyone up, in 56 seconds, at 11pm. And every step in that list corresponds to a setting: the language, the table assigned, the reminder, the tag. Any of them can be switched off.
Before Heep
- Messages handled the next day — or never
- No replies in foreign languages
- No record in the CRM or booking system
- 40% of WhatsApp enquiries lost
With Heep
- Reply within 30 seconds, 24/7
- The guest's own language, detected and held
- Automatic sync with Zenchef / SevenRooms / CRM
- 87% of conversations closed without human input
Case study · Lyon bistro (6th arr.) · 50 covers
- +18 bookings/month from WhatsApp alone
- 87% automation rate
- <30s average time to first reply
“Before Heep, we picked up WhatsApp messages in the morning. Half the guests had already booked elsewhere. Today, the channel is our #2 source of weekday covers — right behind Zenchef.”
Then there is what Heep does not handle, and that was settled before the promise was written: above 8 covers, on a private-hire request, on a severe allergy or on a quality complaint, Heep does not decide. It hands off to your team with the whole thread, so the guest never repeats themselves. A conversation picked up from zero is a conversation lost.
Live in 24 hours: WABA, Meta, Heep
Connecting WhatsApp Business to Heep is not a technical project, it is a sequence of four sign-offs. Three depend on Meta, one depends on you.
Choose your WABA number
Either migrate your existing number (your landline, your work mobile) or Heep provisions you a dedicated one. Migration takes 24 to 48 hours; guests never see a service interruption.
Meta Business verification
Documents needed: business registration, proof of address for the venue, ID of the manager. Meta validation within 24 to 72 hours. Heep prepares the file for you.
OAuth connection in Heep
One click. Heep retrieves the token, configures the webhook, and connects your booking system (Zenchef, SevenRooms, TheFork, Tock) and your CRM.
Test conversation + go live
You send a message to your new number. You watch Heep reply. You sign off on the tone, the availability logic, and the answers to common objections. You switch it on. You’re live.
On the team side, everything lands in a single unified inbox: WhatsApp, Instagram DM, email, SMS and the messages sent after a missed call. Your staff install nothing. They open the inbox when Heep calls them into a thread, and only then.
Three restaurants, three thresholds, three results
Three recent rollouts, three profiles, and above all three different escalation thresholds. The results below are measured over the 90 days following go-live.
- Lyon bistro, 50 covers. Bookings coming from WhatsApp alone, most handled end to end, with human escalation kept for groups over 8 and private hire.
- Paris brasserie, 120 covers. International guests are now captured on WhatsApp because the reply comes back in their own language, on a slot where nobody used to answer.
- Michelin-starred venue, provincial France — 35 covers. Private-hire requests handled in 24h vs 5 days before. Three parties of 12 confirmed over the last 30 days that would have been lost by email.
The common thread: none of them hired, none of them changed booking systems, none of them touched their website. What they changed was a setting, and it is the only one that really matters at the start: above what party size do you want to take the thread back? Eight, ten, twelve. You set it at go-live, you move it when the season changes, and everything else follows from it.
Frequently asked questions
Can Heep use my existing WhatsApp number, or do I need a new one?
Either works. Migrating an existing number takes 24–48 hours with no visible downtime for guests. If you’d rather have a dedicated number, Heep can provision one in under an hour.
Will guests realise they’re talking to an AI, or does it feel human?
Heep speaks on behalf of the restaurant, in the tone and vocabulary you approve during setup. There’s no forced “bot” or “virtual assistant” disclaimer. You’re free to disclose the AI if you’d like to — good practice in sensitive markets.
What happens when Heep can’t answer? Is the team alerted?
Yes. Heep hands off to your team in 6 documented cases (groups >8, private hire, serious allergy, complaint, out-of-scope request, clear uncertainty). You get the alert in the unified inbox, with full context.
Is Heep compatible with Zenchef, SevenRooms or TheFork for confirming WhatsApp bookings?
Yes — native connectors for Zenchef, SevenRooms, TheFork and Tock. Heep checks real-time availability, creates the booking and pushes it into your system. See the Zenchef integration guide.
How much does WhatsApp Business API + Heep cost per month for a 60-cover restaurant?
On Meta’s side: inbound conversations started by the guest are free (24-hour service window). Proactive outbound conversations (reminders, campaigns) are billed per message — a few cents each. On Heep’s side: a flat monthly plan covering every conversational channel, with no per-message surcharge. Custom quote within 24h after a demo.
