---
title: "Meta Custom Audiences"
description: "Connect a Meta ad account and sync hashed emails into a Custom Audience."
url: https://wholayer.com/help/ad-audiences-meta
---

# Meta Custom Audiences

> Connect a Meta ad account and sync hashed emails into a Custom Audience.

Category: Destinations

Part of [ad audiences](https://wholayer.com/help/ad-audiences). If Meta says **coming soon, needs setup**, our Meta app isn't approved yet.

## Set it up
1. Open **Ad audiences** and click **Connect Meta**. Sign in to Facebook with a user who can manage the ad account and approve access.
2. Choose the ad account. Only active accounts you can manage are listed.
3. Accept Meta's **Custom Audience terms** for that ad account if you haven't. We link to them from the page. Without them, Meta rejects uploads.
4. Create an audience. It appears in Ads Manager under **Audiences** after the next sync, named as you named it.

## Good to know
- We create a customer-list Custom Audience and send SHA-256 hashes of trimmed, lowercased emails. The audience is marked as partner-provided data, because the emails come from WhoLayer, not directly from your customers.
- Meta shows an estimated size range. It needs about 100 matched people before the audience can deliver.
- Meta access lasts about 60 days. We show the expiry date; click **Reconnect** before then to keep syncing.
- Deleting the audience in WhoLayer deletes it in Meta, and ads using it stop.

## Related

- [Ad audiences for Meta, Google, and LinkedIn](https://wholayer.com/help/ad-audiences.md)
- [Google Customer Match](https://wholayer.com/help/ad-audiences-google.md)
- [LinkedIn Matched Audiences](https://wholayer.com/help/ad-audiences-linkedin.md)