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Ad audiences and telling Meta who bought

5 min readUpdated October 2026Pro · Custom
Audiences let you show ads to people who already know you, leave out people who already bought, and ask Meta to find more people like your buyers. Tell Meta who bought sends Meta the result of your WhatsApp ads, so it learns which ads bring buyers. Both are on the Ads page: Grow → Ads → Audiences.
Before you begin
  • Your Meta ad account must be connected. Audiences live in your own ad account.
  • Telling Meta who bought only counts chats that started from a WhatsApp ad, and only workspace admins can switch it on or off.
  • Audiences are used when you create an ad. Ads are part of the Pro plan.
Make an audience

On the Ads page, open the Audiences tool. Under Make an audience from, pick who to include. Each choice shows about how many people it holds, and is greyed out when nobody fits yet.

ChoiceWho is in it
People who messaged you from an adEveryone who started a WhatsApp chat from one of your ads. Show them a new offer, or leave them out of ads for new people.
Everyone who messaged you on WhatsAppPeople who already know you.
Your customersLeads you marked as Won. Leave them out, or find more people like them.
All your leadsEveryone in your leads list with a phone number.

Tanvik sends the people to Meta and the audience appears under Your audiences with how many people were sent. Audiences update once a day. Click Sync on an audience to update it now, or the trash button to delete it (it is removed from Meta too, and ads that use it stop using it).

How your contacts' phone numbers are shared. Phone numbers are sent to Meta scrambled (hashed), so Meta can only match people who are already on Facebook or Instagram. Meta needs about 100 matched people before it shows an ad to an audience.
First time. Meta may ask you to accept its Custom Audience terms once for your ad account. Tanvik shows a link, Open the terms in Meta. Tap Accept there, come back and make the audience again.
Find similar people

Once an audience has at least 100 people sent, a Find similar people button appears on it. Choose a Country and How close the match should be, from Closest 1% (best match) up to 10% (most people), then click Make it. Meta takes a few hours to fill the new audience. It then shows under the audience it came from and can be used in ads like any other.

Use an audience in an ad

When you create a WhatsApp ad, a website, sales or awareness ad, or a lead form ad, the audience step has:

  • Who sees it: leave it on Everyone of this age in this country, or pick one of your audiences.
  • Leave out people who already bought: shown once you have a Your customers audience, and ticked by default. Your ad then skips people who are already customers.

If you have no audiences yet, the field says to make them in Ads → Audiences.

A good start: make Your customers first. Leave it out of every ad for new people, and use Find similar people on it to reach new buyers.
Tell Meta who bought

In the Tell Meta who bought section, switch the toggle On. From then on, when a lead that came from a WhatsApp ad becomes Qualified or Won, Tanvik tells Meta which ad they came from, with the deal value. Meta then shows your ads to more people like your buyers, and Ads Manager shows sales, not just chats.

  • Only chats that started from a WhatsApp ad are sent, each result once. Nothing is sent about other chats or leads.
  • Click Check connection to see if each of your WhatsApp numbers is ready. It lists any number that is not, with the reason.
  • The section shows how many results were sent in the last 30 days, how many are waiting, and how many could not be sent, with the reason.
  • Mark leads as Won and add their Deal value so Meta learns what a buyer is worth.
Common problems
?
It says "Connect your Meta ad account first"
Audiences need your ad account. See Connect your Meta ad account.
?
An audience says "Not usable in ads yet"
Meta gives the reason next to it, often that the audience is still too small. Meta needs about 100 matched people.
?
A choice is greyed out
It shows Nobody yet. For example, there are no chats from ads, or no leads marked Won.
?
I can't switch on Tell Meta who bought
Only workspace admins can change it. Ask an admin.