Restaurant WhatsApp campaigns: 12× more replies than email — without spamming your guests

"Can I let my regulars know the terrace reopens on Saturday?" The request always arrives in those words, three days before a service to fill, with a guest database asleep in the booking system. The answer is yes, but the frame isn't yours: traceable opt-in, an approved template, a 24-hour window.

Meta decides what goes out, and a blocked campaign damages the number you answer guests on.

Why 1 in 5 customers has stopped reading your newsletter

Email drowns in promotions. SMS costs a lot and doesn't invite a reply. WhatsApp lands in the same thread as family: that is its strength, and that is why one message too many shows up there.

• 98% average open rate of a WhatsApp Business message, against 20% on email (Source: Statista, Messaging app benchmarks 2024)
• 65% of consumers prefer messaging a business over calling or emailing (Source: Meta Business Messaging Survey 2024)
• Straight away A guest who answers a campaign is booked inside the conversation, with no form to fill and no call to return

See how many bookings you're losing

The 4 Meta rules before you send a single marketing message

Each rule has a trade-off, and it lands at send time.

1. The contact must have said yes, and you must prove it. A purchased list is blocked. Opt-in comes from a QR code on the bill or a checkbox at booking.
2. A marketing message goes through a template. The HSM is validated by Meta before you send, within 24 hours. A promo copied from Instagram is refused: category counts as much as wording.
3. Outside a template, you have 24 hours. The window opens on the guest's last message and closes on its own: a message to someone silent for 48 hours is rejected.
4. Unsubscribing works like a cancellation: one tap, a time-stamped register, and the contact leaves every segment.

80-cover brasserie, Lyon

• Starting point: 8,000 customers, last email newsletter at 14% open rate and 0.8% click-through.
• Action: first WhatsApp campaign, "Valentine's Day booking", sent to 500 opt-in customers.
• Result within 48h: an open rate nothing in email comes close to, and bookings confirmed inside the conversation itself.
• Revenue impact: covers filled on a quiet slot, zero GDPR complaints.
• See also: reply to every guest review without writing each one from scratch and turn Instagram DMs into confirmed bookings.

3 campaigns that actually drive revenue, in 5 steps

1. Customer birthday

   The trigger is the date, picked up three days ahead in your database. Average ROI: 8× on the template investment.

2. Dormant re-engagement

   The segment is an absence: not seen for 90 days, and the message recalls the visit, not a discount. 22% reactivation rate observed.

3. Seasonal event

   Valentine's Day, Mother's Day, Christmas. Visual template, link to booking, stop date. Bookings land within 48 hours, or not at all: plan the room accordingly.

4. Measure

   The dashboard shows opens, clicks, conversions and revenue, campaign by campaign.

5. Decide

   The most useful step, and it is yours: keep the segment that filled the service, drop the one that cost two opt-outs per booking.

Calculate my WhatsApp booking potential

How Heep automates everything, from CSV to delivered message

• The opt-in proof and the template. HSM templates validated by Meta in EN and FR, time-stamped proof per contact.
• Segments built on your own data. Not seen for 90 days, parties of 6 and above, tags your team put on a guest file. No loyalty score is computed behind your back.
• The 24-hour window, held by the system. A free-form message outside the session is blocked before it goes out, not after at Meta's end.

The one decision nothing can automate is frequency. One message a month to an opted-in list bothers nobody, three a week costs you opt-outs you never get back.