Restaurant email sits in a promotions tab and is largely unread. WhatsApp is read, usually within minutes. That gap is why restaurants across Europe and the GCC are moving campaigns onto it.
It also raises the stakes. A promotional email that misses is ignored. A WhatsApp message that misses feels like an intrusion, and guests block rather than unsubscribe.
Guests must have opted in, and the opt-in has to be real rather than buried. This is both a compliance matter and a practical one: people who did not agree to be messaged react badly, and blocks are permanent.
The channel's strength is that it is not saturated. Weekly promotional messages destroy that quickly. Most restaurants get better results from occasional, well-targeted messages than frequent broadcasts — and the frequency that works on email is far too high here.
Because each message carries a real cost and a real risk of a block, WhatsApp rewards precision. A message to two hundred guests who match a specific behaviour will outperform a blast to four thousand, on both response rate and cost.
Booking confirmations and reminders. Genuinely time-sensitive things a guest would want to know — a table freeing up, a limited menu for one weekend. Win-back messages to a small, well-chosen list. Recognition messages that do not ask for anything.
Generic weekly offers. Anything a guest did not ask for and would not miss. Long messages — the channel is conversational, and a marketing paragraph reads as spam in a place where people expect messages from friends.
WhatsApp and SMS are billed per message at rates that vary by country; email is effectively free by comparison. Any tool that pools these into one credit balance is hiding a meaningful cost difference — worth checking how it is metered, and whether spending is capped by default.