Combine Audiences From a CSV File

Combine audiences to simplify audience management and help reduce the cost of your monthly plan by eliminating duplicate contacts. To combine an exported or saved contact audience into a master Mailchimp audience, import a CSV.

In this article, you'll learn how to combine audiences with an import.

Before You Start

Here are some things to know before you begin this process.

Task Roadmap

This is a multi-step process. You'll need to perform these steps in sequence to complete the task.

  • Decide which of your Mailchimp audiences you want to use as your master audience.
  • Export the audience you want to combine with your master audience.
  • Import contacts to your master audience.


To combine a Mailchimp audience with another audience, first export and download the audience you want to merge with your master audience. We'll automatically keep your audience’s subscribed, unsubscribed, non-subscribed, and cleaned addresses in separate files, which you'll need later in this process.

Import to Your Master Audience

To import your exported contacts to your master audience, follow these steps.

  1. Navigate to the Audience tab.
  2. If you have more than one audience, click the Current audience drop-down and choose the one you want to work with.
  3. Click the Manage Audience drop-down and choose Import contacts.
  4. Choose CSV or tab-delimited text file.
    click csv or text file
    If your last import was a CSV with the same columns, you can click Use settings from last import, which will allow you to skip steps 6-10.
  5. Click Continue To Setup.
  6. Click Browse and choose the file from your computer.
    If you’re file contains enough contacts to raise your account’s subscriber total to higher billing plan, you’ll see an Are You Sure pop-up. Click Continue to proceed with the import, or click No Thanks to select another file.
  7. Click Continue to Match to go to the Import contacts step and match the columns in your import file to the fields in your Mailchimp audience.
    import-continuetomatch We’ll automatically match the columns in your import file to fields of the same name in your audience. For example, the column that contains email addresses will match the required Email Address field.
  8. Click Edit to choose a different field from the drop-down menus. To create a new field, click the drop-down menu and choose Create a new field.
  9. Repeat Step 7 for all unmatched columns. You must match or skip all columns to complete your import.
  10. After you're finished matching, we'll display a success message.
  11. Click Continue to Review to review your final import settings.
  12. On the You're all set to import! screen, click the status drop-down menu to choose the type of contacts you’re about to import. If your audience export includes multiple CSV files for different types of contacts, you’ll need to import each file separately.
    The available statuses for contacts are:
    • Subscribed
    • Unsubscribed
    • Non-subscribed
    • Cleaned
  13. Optional: If you want to assign tags to your imported contacts, click the plus (+) icon in the Tag all your imported contacts section and choose or create tags as needed. This is a good way to identify contacts who were combined from another audience.
  14. Review your settings and click Import.

After the import is finished, we'll send a notification to the email address associated with your username. Repeat this process for each type of contact you want to import.

Next Steps

After you've combined your audiences, make sure any signup form URLs, and pop-up, embedded, or hosted forms on your websites or social networks to match your new master audience.

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