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WhatsApp is not email. The formats that work in an inbox fail in a chat thread — here is what to write instead, with examples.
A WhatsApp message lands in the same thread as messages from someone's family. That single fact should change everything about how you write it, and it is why marketing copy that performs well in email tends to fall flat — or get reported — on WhatsApp.
The tone that works is the tone a helpful shop owner would use: direct, specific, and short. No banner headline, no three paragraphs of preamble, no "Dear Valued Customer".
Compare these:
The second is shorter, names the person, references something real, and contains a deadline. It reads like a message. The first reads like a poster, and people do not want posters in their chat app.
On WhatsApp the customer sees the first line as a preview. If it does not tell them what this is about, they will not open it — and an unopened marketing message is worse than none, because it still counted as a message from you.
Put the specific thing first: the offer, the order number, the date. Save context for after it.
Merge fields are worth using, but only when the personalised detail matters. "Hi {{name}}" at the top of a generic blast fools nobody. "Hi {{name}}, your order {{order_id}} ships tomorrow" is personal because the content is personal, not because the greeting is.
If the only thing you can personalise is the first name, consider whether the message needed to be a broadcast at all.
Every broadcast should ask for exactly one thing: reply YES, tap this link, come in before Sunday. Two calls to action halve each other. And because this is a chat app, the easiest possible action is usually a reply — which has the pleasant side effect of being a signal that you are having conversations rather than blasting.
Keep it to what fits on a phone screen without expanding. Three or four short lines is usually plenty.
Images earn their place when the product is visual — a dish, a dress, a room. They cost their place when they are a text poster, because the customer then has to load an image to read words you could have typed. If you find yourself putting sentences inside a graphic, write them as text instead.
Buttons and list options are worth using when you want a reply that you can act on automatically, like picking a size or confirming a time.
A marketing message at 11pm is remembered for being at 11pm. Mid-morning and early evening tend to work; scheduling exists so you can write when it suits you and send when it suits them.
Before a campaign goes to your whole list, send it to a small slice and look at what happens. Delivered and read counts tell you whether the message landed; replies tell you whether it worked. If the small group ignores it, the large group will ignore it more expensively.
Then change one thing — the first line, the offer, the send time — and try again. Most of the gain in WhatsApp marketing comes from the first line and the offer, not from the tooling.
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