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- Go to Settings → Settings.
- Go to the Mailing List Details section.
- In Mailing List Provider, select Mailchimp Mailchimp3.
- In Mailing List API Key, enter the API key provided by Mailchimp.
- Ensure Mailing List Ecommerce Enabled is ticked.
- In Mailing List Store Identifier, enter your store name.
- At the top of the page, click Update.
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