MageDelight's Magento 2 Abandoned Cart Email Extension comes with blacklist feature to help you restrict reminder emails for the customers who unsubscribed themselves.

Read this guide on How to Configure Abandoned Cart Email in Magento 2 set up Abandoned Cart Email in Magento 2.

Here are the few more resource to help you get most out of this Magento 2 Abandoned Cart Email Extension.

• Abandoned Cart Emails : Best Strategies to Recover the Lost Sales
• What is Abandoned Cart? 5 Easy Ways to Reduce your Abandoned Cart Rate
• How to Boost Sales using Abandoned Cart Email Extension in Magento 2
• Benefits of Abandoned Cart Email for eCommerce Business