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Adding a newsletter subscribe option to checkout

You can encourage customers to subscribe to a newsletter at checkout by connecting it to Email Campaigns or a MailChimp account. This adds a Join our mailing list checkbox below the email field on your checkout page.

The subscribe option is great way to build your mailing list, increase customer loyalty, and encourage repeat purchases.

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Step 1 - Create a list

To start, create a mailing list in Email Campaigns or MailChimp. This lets you store subscribers' information in a specific mailing list.

Email Campaigns

If you use Email Campaigns for newsletter storage, visit Building a mailing list to learn how to create a list.


If you use MailChimp for newsletter storage, you'll need to create a new, empty list in MailChimp. visit MailChimp's documentation to learn how to create a new list.

Step 2 - Connect your account

To connect to Email Campaigns: 

  1. In the Home Menu, click Commerce, and then click Checkout
  2. Scroll down to Mailing lists and click Select a mailing list
  3. Click Squarespace Campaigns.
  4. Click the Select a list drop-down menu to choose a mailing list to store submissions. If you haven't built a mailing list yet, visit Building a mailing list to set one up. 
  5. Edit the text that prompts customers to subscribe. 
  6. Click Save

To connect to MailChimp: 

  1. In the Home Menu, click Commerce, and then click Checkout.
  2. Scroll down to Mailing list and click Select a mailing list.
  3. Click Connect other services, and then click MailChimp.


  1. Log in using your MailChimp username and password.

  1. Select a subscriber list from the drop-down menu.

Step 3 - Enable or disable automatic opt-ins

By default, customers will automatically opt into your newsletter at checkout. To disable automatic opt-ins, uncheck Enable mailing list opt-in by default to have this unchecked for your customers by default.

Certain merchants may need to uncheck this option to comply with local law and regulations, such as anti-spam regulations. Canadian merchants can learn more by visiting Tips for Canadian merchants.

Note: Squarespace doesn't provide specific advice on laws or requirements applicable to your site or business.

Step 4 - Save

When you're finished, click Save.

Your customers will now see a Join our mailing list checkbox below the email field on the checkout page.


Next steps

There are other ways to grow your subscriber list on your site. You can use the Newsletter Block or Form Block to add a subscription form to a page, sidebar, or footer.

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Adding a newsletter subscribe option to checkout