Advanced Form Integration plugin allows you to integrate PlanSo Forms to Mailchimp. When a user fills a form on your website, the plugin will send the data to your Mailchimp account and create a contact in the preferred audience. You can also add custom merge fields and tags.

2 Sample Contact Forms

Supported Features

  • Create a new contact with all basic (First Name, Last Name, Email) and custom merge fields. It also allows adding the contact to a preferred list.


  • The feature requires a Pro license. BUY NOW!
  • Make sure that the Pro version of the Advanced Form Integration plugin is installed and activated. You should have got the links in the email after purchase. You can also download it anytime by logging into the user dashboard.
  • Read plugin documentation for PlanSo Forms and Mailchimp. It is not required but helpful for a better understanding.

Obtaining Mailchimp API Key

Before start, you are required to save the API Key in plugin settings.

  1. Login to your Mailchimp account.
  2. Go to Account > Extras > API Keys. Copy the key.
  3. Go to the WordPress admin area, click AFI > Settings.
  4. Select the Mailchimp tab.
  5. Paste the Key in the API Key input box and click Save Changes.

Create New Integration

Once API Key is saved you can start creating new integration. Click on Add New under AFI menu, New Integration page will appear.


A default title will be auto-generated with an auto incremental number. You can rename it to something related to the task. It will help you to quickly recognize the correct one when there is multiple integrations setup.


Select PlanSo Forms in From Provider dropdown. PlanSo Forms plugin must be installed and activated otherwise you won’t see it listed. After selecting PlanSo Forms, all forms built under PlanSo Forms will be fetched and auto-populated in the Form/Task Name dropdown. Select the form that you want to integrate.

PlanSo Forms – Trigger setup


Select Mailchimp [PRO] in Platform dropdown.

Mailchimp – New Integration

Map Fields

Available contact lists will be auto-populated. Select the desired one. Map Email, First Name, Last Name, etc., and other fields that you want. Skip the fields that not needed. Finally, click the Save Integration button.

Mailchimp – Map fields

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Frequently asked questions


Still need help?

Reach our support team at [email protected]

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