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What gets read in three seconds doesn't start with "Special offer!"
You'll come away with the opening line of your broadcast written for each customer group, plus a clear sense of what to leave unsaid in the message and where the extra details go.
By Yodai · Published September 6, 2026 · Updated October 12, 2026
You write the broadcast, read it back, and the first line says "Special offer this week!" It sounds good in your head. On your customer's phone, that line is the only thing they see before deciding whether to open the message or delete it without reading the rest.
On WhatsApp there's no subject line you can fix after someone's already decided to open it. The notification shows the first line, maybe the second one too. That handful of words is your entire shot.
The question isn't what you're going to say in the message. It's what goes in that first line, and what gets left out, even if it feels important.
The first line decides, not the rest of the message
You already know who you're not going to message and which group each customer belongs to. That work goes to waste if everyone ends up getting the same opening line.
A notification shows a few words before it cuts off, and how many depends on the phone. There's no room to explain the offer, your business name, or the fine print. There's room for one line, and that line has to earn the next one.
If it doesn't, the rest of the message doesn't exist for whoever received it: they deleted it without ever opening it.
- "We have an offer this week"
- It talks about the store or the brand
- The same line works for any customer
- It names something that customer already did or asked about
- It uses their situation, not yours
- It changes depending on which group they belong to
Which one to pick: Choose to start with the customer whenever you want the message opened. Only lead with your business when the message is a neutral notice that doesn't need to hook anyone, like a change in hours.
What it recognizes, not what you're announcing
The line that works doesn't talk about what you sell. It talks about what the customer already did: how long it's been since they bought something, what they left unfinished, what they asked about but never followed through on.
If you already split your list into groups, that's exactly the material you need. The group of people who, three months ago, bought a product that runs out doesn't need an offer yet: they need a line that tells them that much time has passed. That alone already recognizes something about them before you ask for anything.
The more specific the line, the less it reads like advertising. "Your checkup is coming up" reads differently than "don't miss our latest arrivals," even though both come from the same store.
What you leave out
Everything that doesn't fit in three seconds gets left out of the message and explained where the customer has already decided to look: the page it links to.
Leave out of the message: the price in all caps, strings of exclamation points, the list of conditions, the full explanation of the offer. Keep in: a line that shows you know your customer, one action, a link, and a short opt-out line.
The more things you cram in to convince someone, the less any of it gets read. A broadcast message doesn't convince, it opens the door. Convincing is the job of the page or the conversation that comes after.
The message is written. Before you send it, WhatsApp sets a limit that changes how you send it: 256 contacts per list, and filling it all the way just because you can is the next mistake.
- 1The line that recognizes
One line about what that customer did, bought, or asked about. No store name, no offer yet. - 2The action
One verb and a single thing to do: book, reply, click. Nothing like "learn more" or "find out." - 3The close
The link or the word to reply with, plus an opt-out line, for example "reply STOP if you don't want more alerts": the law requires that unsubscribing from marketing be simple and free. Nothing after that: anything extra just takes away.
- Your broadcast has a different opening line for each group, not one line for the whole list
- You know what to leave out of the message and where the rest goes: price, terms, and details go on the page, not in WhatsApp
- Next up: who opened the message and who bought, so you don't repeat what didn't work next time