Guide

Top 5 reasons WhatsApp is the ideal platform for till slip competitions

By Andrew Walmsley · 3 February 2025 · Updated 3 November 2026 · Smartslip.ai, built by Brazen Labs

Five green chat bubbles of different sizes.

If you want to meet shoppers where they already are, WhatsApp is the obvious room. More than 2 billion people use it. In South Africa it is the messaging app most people actually open. Paired with Smartslip.ai, that reach, the instant reply, and a photo that is easy to send become a till slip competition people will finish.

1. Wide reach and high engagement

WhatsApp cuts across age groups. In South Africa it is the default chat app, so a brand can invite a large audience without teaching a new channel. People are already in the app, which is why a competition there tends to get more interaction than a method they have to go and find.

2. Real-time communication

A shopper can send the slip, hear back, and be told if they are in, all in the same thread. Reminders, entry updates and winner messages can travel the same way. The conversation stays moving, which is what keeps people in the campaign.

3. A photo, without a form

Proof of purchase is a picture of the receipt. WhatsApp already sends pictures. There is no upload page to learn. Smartslip.ai takes that photo and checks it, so the shopper’s job stays “snap and send”. That convenience is usually why more people enter. The check itself is SmartCheck.

4. Personal interaction

WhatsApp feels like a conversation, not a call centre menu. A brand can confirm the entry, send an offer that fits the basket, or answer a question in the same chat. Familiarity makes the brand feel closer, and closer is how loyalty starts.

5. Cost-effective

Most customers already have the app, so you are not funding a download or a new piece of software for them. Automating the check, the updates and the tracking takes the admin off the team. You still pay for the conversation, so keep it short.

What brands have seen

  • An FMCG brand moved a national competition from email to WhatsApp and reported about a 35% lift in participation, with shoppers pointing at how easy the photo was.
  • A restaurant chain took meal receipts on WhatsApp for weekly prizes. Real-time updates and instant winner messages were credited with about a 25% rise in repeat visits.
  • An electronics retailer used the holiday period for receipt entries and sent personalised discount codes back in the chat. More than 40% of participants were reported back in store within a month.

The playful version of the same idea is why WhatsApp is the superhero of till slip promotions.

To plan one, email andrew@brazenlabs.co.za. The short version of how these campaigns work is in till slip campaigns explained.