TL;DR: WhatsApp reaches around three-quarters of UK adults, which makes it one of the most direct marketing channels a small business can own. Start free with the WhatsApp Business app, treat the channel as a conversation rather than a broadcast, and get explicit permission before you send anything promotional — because UK law treats a marketing WhatsApp much like a marketing email. Why WhatsApp belongs in your marketing mix Email gets ignored. Social posts get buried by the
