If you want to add your new Pipedrive contacts to your MailChimp, you can do that using Zapier.
You will need
Getting your accounts ready
To connect your Pipedrive account to Zapier, you will need an active Pipedrive account. If you are looking to familiarize yourself with Pipedrive, check here. You can find out about getting started with Pipedrive on Zapier here.
To link your Pipedrive account to MailChimp, you must have an active MailChimp account and an active list. For more information on how to get started on MailChimp, including creating and managing a new list, you can start here. You can learn more about getting started with MailChimp on Zapier, here.
Connecting your accounts
Click here to send Pipedrive Contacts to your MailChimp subscribers.
Now test the Zap to make sure it works. Once you're satisfied, your newly-added contacts in Pipedrive will be added to your MailChimp as subscribers.