About Duplicate Contacts
Learn how Mailchimp handles duplicate contacts in your account, and how to remove duplicates from a spreadsheet file if you need to.
Learn how Mailchimp handles duplicate contacts in your account, and how to remove duplicates from a spreadsheet file if you need to.
Learn what you'll need to do to keep your audience healthy over time.
Learn about opt-in methods for offline subscribers and how to get proof of permission from offline collection.