Use case

Meta Ads custom audiences from DM leads

Your commenters are your best lookalike seed.

Updated September 23, 2026 · By the FameChamp team

Quick answerFameChamp exports captured emails as SHA-256 hashed values in a CSV ready to upload to Meta Ads Manager as a custom audience. Use it to retarget people who asked for your freebie or to seed a lookalike audience. Opted-out contacts are left out. CSV export is on Pro.

Steps

  1. Open Contacts, then Export, and pick the Meta Ads preset.
  2. In Ads Manager, create a custom audience from a customer list.
  3. Upload the CSV and map the hashed email column.
  4. Build a lookalike from it.

Why hashed?

Meta matches hashed emails, and hashing means the file never holds readable addresses.

Frequently asked questions

Can I upload Instagram usernames?

No. Meta Ads cannot match Instagram-scoped IDs, which is why the export uses emails.

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