Customer List Custom Audiences
By the AdFlint research team · Last reviewed July 2026
A Meta custom audience created by uploading hashed customer identifiers, matching your CRM records to Meta accounts for targeting, exclusion, or lookalike seeding.
You upload emails, phone numbers, and other identifiers, hashed before they leave your machine, and Meta matches what it can to user accounts. A value column unlocks value-based lookalikes. Match quality depends on how recent and complete the data is, and the list is static: last quarter's upload keeps excluding churned buyers and keeps missing everyone acquired since, unless you refresh it.
Customer List Custom Audiences compared with
The settings this gets confused with, and how to tell them apart.
- Customer List Custom Audiences vs Broad Targeting
- Customer List Custom Audiences vs Advantage+ Audience
- Customer List Custom Audiences vs Detailed Targeting
- Customer List Custom Audiences vs Interest Targeting
- Customer List Custom Audiences vs Lookalike Audiences
- Customer List Custom Audiences vs Website Custom Audiences
- Customer List Custom Audiences vs Engagement Custom Audiences
- Customer List Custom Audiences vs Saved Audiences
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