Audience Upload Guide

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Audience Upload Guide

How to upload the monthly audience CSV files to Meta Ads and Google Ads. The automation generates SHA256-hashed audience CSVs with emails and phone numbers on the 1st of each month. You upload these as Custom Audiences for targeting, lookalikes, and suppression.

Total time: ~10 minutes per month

Uploading Audience CSVs to Meta Ads

1

Open Audiences Manager

Go to Meta Business Suite → All Tools → Audiences

2

Create Custom Audience

  1. Click Create Audience → Custom Audience
  2. Select Customer list
  3. Click Next
3

Upload the CSV

  1. Select Upload a file (.csv or .txt)
  2. Upload the file (e.g., meta_custom_audience_us.csv)
  3. Map the columns: email_sha256 → Email, phone_sha256 → Phone Number
  4. Important: Check "Data is already hashed" - our CSVs contain SHA256 hashes, not raw data
  5. Name the audience (e.g., "Juicy Marbles - US High-Value Customers - March 2026")
  6. Click Upload & Create
4

Wait for Processing

  • Meta takes 30-60 minutes to match the audience
  • Expected match rate: 40-70% (higher for US, lower for EU)

Uploading Audience CSVs to Google Ads

1

Open Audience Manager

Go to Google Ads → Tools & Settings → Shared Library → Audience Manager

2

Create Customer Match List

  1. Click the + button → Customer list
  2. Name the segment (e.g., "Juicy Marbles - US Champions - March 2026")
  3. Select Upload hashed customer data
3

Upload the CSV

  1. Upload google_customer_match_us.csv
  2. Google recognizes SHA256-hashed emails automatically
  3. Click Upload and create
4

Wait for Processing

  • Google takes 24-48 hours to process
  • Minimum 1,000 matched users required for targeting

Suppression Lists

Also upload the suppression files to exclude these users from campaigns:

suppressions/discount_only_buyers.csv Exclude from EU prospecting campaigns
suppressions/champion_buyers.csv Exclude from ALL prospecting (they're already customers)

How to Use as Exclusion Audience

  1. Upload the suppression CSV as a Custom Audience (same steps as above for each platform)
  2. In your campaign settings, go to Audiences → Exclusions
  3. Add the suppression audience to exclude

Which Files to Upload

File Platform Use As
meta_custom_audience_us.csv Meta Ads Targeting / Lookalike source
meta_custom_audience_eu.csv Meta Ads Targeting / Lookalike source
google_customer_match_us.csv Google Ads Customer Match
google_customer_match_eu.csv Google Ads Customer Match
discount_only_buyers.csv Both Exclusion audience
champion_buyers.csv Both Exclusion audience

Tips

  • Upload fresh audiences every month (the automation generates new files on the 1st)
  • Delete or archive old audiences to avoid confusion
  • For Meta lookalikes: once the Custom Audience is created, click it and select "Create Lookalike" to find similar users
  • For Google: the Customer Match list can be used directly in campaign targeting under Audiences
  • Total time: ~10 minutes per month