hjfraindar

This Plugin will add to every woocommerce product a new field called Mailchimp List. 
This will allow you to subscribe users to different lists based on the products the’re buying.

Smartservices, Mailchimp List By Woocommerce Product

This plugin allows to subscribe users to different Mailchimp lists based on the product that they buy.

jessaumick

Purchase Tagger is a lightweight, no-bloat plugin for tagging Mailchimp contacts based on specific items purchased from your WooCommerce store. Tagging is supported for product variations, product parents, simple products, and global purchases.
Features:
<ul>
<li>Assign tags to simple products</li>
<li>Assign tags to variable products (applies to all variations)</li>
<li>Assign unique tags to individual variations</li>
<li>Automatically creates transactional contacts for new customers</li>
<li>Updates existing Mailchimp contacts without changing their subscription status</li>
</ul>
Use Cases:
<ul>
<li>Use global tagging to track all contacts with purchase history</li>
<li>Segment customers by specific product purchase history</li>
<li>Trigger automations and add customers to journeys based on purchase behavior</li>
<li>Track which products a customer has bought</li>
</ul>
<h3>Privacy Policy</h3>
This plugin sends customer data (email address, first name, last name) to Mailchimp’s servers when an order is processed. This data is used to create or update contacts and apply tags in your Mailchimp audience.
Please ensure your store’s privacy policy discloses this data sharing. For more information, see <a href="https://mailchimp.com/legal/privacy/" rel="nofollow ugc">Mailchimp’s Privacy Policy</a>.

Purchase Tagger – Product-Based Mailchimp Tags

Assign Mailchimp tags to contacts based on WooCommerce purchases.

Smartservices, Mailchimp List By Woocommerce Product vs Purchase Tagger – Product-Based Mailchimp Tags