Unsubscribing from Campaigns / CRM

Unsubscribing from Campaigns / CRM

Hi, 

We have lists of people who we send campaigns out to, however when they unsubscribe from the email campaigns, they automatically get unsubscribed from receiving our emails from CRM/Zoho. Which is not ideal as we still need them to receive our emails? 

Is there a way around this? 

Is there a way for students to unsubscribe from our newsletter for example, but not be unsubscribed on CRM?