Facebook custom audience with multiple email

Facebook allows you to create a custom audience with multiple email addresses. Here's how:

Method 1: Upload a CSV file with multiple email addresses

1. Go to your Facebook Ads Manager and click on "Audiences" in the top navigation bar.
2. Click on "Create Audience" and select "Custom Audience".
3. Choose "Customer List" as the audience type.
4. Click on "Upload a file" and select a CSV file that contains the email addresses you want to add to the custom audience.
5. Make sure the CSV file is formatted correctly, with each email address in a separate row and the header row containing the column name "Email".
6. Upload the file and Facebook will match the email addresses to their corresponding Facebook users.

Method 2: Use Facebook's "Upload a list" feature

1. Go to your Facebook Ads Manager and click on "Audiences" in the top navigation bar.
2. Click on "Create Audience" and select "Custom Audience".
3. Choose "Customer List" as the audience type.
4. Click on "Upload a list" and enter the email addresses you want to add to the custom audience, one email address per line.
5. Facebook will match the email addresses to their corresponding Facebook users.

Method 3: Use Facebook's "Add to Audience" feature

1. Go to your Facebook Ads Manager and click on "Audiences" in the top navigation bar.
2. Click on the custom audience you want to add more email addresses to.
3. Click on the "Add to Audience" button.
4. Enter the email addresses you want to add to the custom audience, one email address per line.
5. Facebook will match the email addresses to their corresponding Facebook users.

Tips and considerations

• Make sure the email addresses you upload are accurate and up-to-date, as Facebook will match them to their corresponding Facebook users.
• Facebook has a limit of 1 million email addresses per custom audience, so if you have a larger list, you may need to create multiple custom audiences.
• Facebook also has a limit of 50,000 email addresses per upload, so if you have a larger list, you may need to upload it in batches.
• Facebook's email matching algorithm is not 100% accurate, so some email addresses may not be matched to their corresponding Facebook users.
• You can also use Facebook's "Phone Number" and "Customer Relationship Management (CRM) data" features to create custom audiences with multiple email addresses.