A text message gets read — usually within minutes — in a way an email or a social post rarely matches. That makes SMS a powerful, and easily abused, marketing channel for restaurants. Used well it fills a quiet Tuesday; used badly it gets you reported. Here are the rules, costs and realistic ROI of restaurant SMS marketing in the UK.

Quick answer

SMS marketing gets very high open rates but needs valid consent under UK PECR, must identify you, and must offer an easy opt-out. Costs are a few pence per message, so keep sends rare and genuinely valuable (a real offer, a timely reminder). Done sparingly it has strong ROI; over-send and you'll burn the list.

Why SMS is powerful

Texts get opened far more reliably and far faster than email — most are read within minutes. For time-sensitive messages (a last-minute table offer tonight, "your order's ready", a booking reminder) that immediacy is exactly what you want. The flip side: it's intrusive, so the bar for sending has to be high.

The rules you must follow (UK PECR)

Marketing texts are governed by PECR and UK GDPR, regulated by the ICO. In practice:

  • Consent. You generally need the person's consent to send marketing SMS. A limited "soft opt-in" can apply to existing customers for similar products — but it's narrower than people assume, so get clear consent where you can.
  • Identify yourself. Every message must make clear it's from you.
  • Easy opt-out. Offer a simple way to stop (e.g. reply STOP) and honour it immediately.
  • Keep records of who consented and when.
A customer reading a message on their phone
Photo by NordWood Themes on Unsplash

The economics

SMS costs a few pence per message, so the numbers only work if each send earns its keep. A text that brings ten lapsed customers back for a £25 order easily covers a send to a few hundred people. But because you pay per message and spend goodwill, frequency is everything — a rare, relevant text is welcome; a weekly blast gets opt-outs and complaints.

What to send (and what not to)

  • Do: genuine, time-limited offers; win-backs to lapsed customers; booking and order reminders; "your table/collection is ready".
  • Don't: send often, send vague "we're still here" texts, or send late at night. Each weak text makes the next one easier to ignore.

How VoiceMenu fits

VoiceMenu's AI Growth layer drafts marketing campaigns for you to approve before they go out, built on your own customer data. Today that approve-then-send flow runs by email, with SMS and WhatsApp channels rolling out — so you can plan an SMS strategy now and turn it on as it lands. See AI Growth insights or the restaurant plans.

Sources

  1. SMS marketing consent, identification and opt-out rules — ICO direct marketing guidance (PECR).
  2. VoiceMenu AI marketing currently sends by email with SMS/WhatsApp channels rolling out; campaigns are approved by a human before sending.