How to Enable Single-Optin for MailChimp in OptinMonster

Most email marketing service providers frown upon single optins, but several do offer the option to enable it. MailChimp, one of the popular email service provider, allows you to enable single-optin by using their API. Since we already use the API to connect with MailChimp, several of our customers asked us to add the ability to disable double-optins and enable single-optin for MailChimp.

OptinMonster makes enabling single-optin for MailChimp a one-click process. Follow this guide to enable single opt-in for MailChimp.

  1. Create or Modify an Optin
  2. Disable MailChimp Double Opt-In
  3. FAQs

Step 1 – Create or Modify an Optin

Create a new optin or modify an existing optin from OptinMonster Dashboard. Open the OptinMonster Builder by selecting the Edit link.

Select the edit button from your Dashboard to edit an optin you've already created.

Step 2 – Disable MailChimp Double-Optin

Select the Integrations tab in the optin builder.

Select the Integrations tab in the optin builder to configure the Integration for your optin.

Within the Integrations panel, once you’ve connected your MailChimp integration you can turn OFF the Enable Double Opt-in? option.

You can disable the MailChimp double-optin in the Integrations panel of the optin builder.

Finally, save your optin and you’re done! New subscribers will be automatically added to your list from this optin.


Q: Can I disable double optin if I’m using a Custom HTML Optin Form integration?

A: No, it’s only possible to disable MailChimp’s double optin when using our native MailChimp integration. This is because MailChimp allows single-optin only through their API, a setting that we cannot override if you’re using a Custom HTML Optin Form integration.