How to Switch from Constant Contact

Switch from Constant Contact to experience the benefits of MailChimp’s affordable, powerful, and easy-to-use email marketing tools. To get started in MailChimp, you'll transfer contacts from your Constant Contact account with our List Import Builder.

In this article, you'll learn about important differences between MailChimp and Constant Contact, and the process you'll use to transfer contacts.

Before You Start

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


MailChimp and Constant Contact talk about your contacts and your lists differently. Refer to this chart to compare Constant Contact and MailChimp terms.

Constant Contact Term                   MailChimp Term

General Interest List


Segment (also called a Sublist)








Filter Your Undeliverable Addresses

To keep your list healthy, MailChimp removes bounces and tracks unsubscribes after each campaign send. This helps make sure you only send email marketing campaigns to subscribed contacts, and also lowers the cost of your monthly plan by eliminating duplicates and addresses you don’t send to.

Unfortunately, Constant Contact doesn’t manage addresses this way, so you’ll need to filter the undeliverable bounced addresses from your list before you can import it to MailChimp. To be extra safe, you can also import a suppression list to MailChimp to protect your sending reputation and permanently keep these undeliverable addresses out of your MailChimp list. After you start sending with us, we’ll handle bounces and unsubscribes.

Learn how to filter undeliverable addresses and prepare your list file for import.

Import Contacts to MailChimp

Although it’s common to have several email lists in Constant Contact, MailChimp works best with one master list, which is similar to your General Interest List. This makes the list management process simpler, and also keeps your subscribed contact count low, which can keep costs down.

After you prepare your list file for import, you’ll export Active Contacts and import them to your MailChimp list.

Learn how to import a Constant Contact list.

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