Exponenciel - Efficient and affordable Sage ACT! add-ons

August 2, 2021


Upgrading Mailchimp II to Mailchimp III

Some functions of our Mailchimp II Plugin for Act! ceased to work overnight due to an undocumented and unannounced change from Mailchimp.

It forced us to release version III of our plugin ahead of our schedule to provide our users with a working solution. Version III is a complete rewrite using the latest Mailchimp API. It introduces a new interface, several new features. It will also allow us to further develop the products in coming months.

The upgrade price depends on the date of your purchase of the Mailchimp Plugin II license.
Please see the bottom of our Order Page for pricing details.

Upgrade process and changes

On the Mailchimp II to III upgrade process and changes, please see this help topic.


Across this Web site, ACT! and ACT! Premium, Sage ACT! Pro and Sage ACT! Premium are referred to as ACT! or Sage ACT!.

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Exponenciel has been a leading developer of Sage ACT! add-ons, Sage ACT! addons, Sage ACT! plug-ins, Sage ACT! plugins since 2001.
ACT!, ACT! for Workgroup, ACT! for Web, Sage ACT! Pro and Sage ACT! Premium are registered trademarks of Sage Corporation.