I am researching options for Zoho/MailChimp integration.

For the client I am working with, the Zoho CRM database contains only a subset of the total contacts. We do NOT want to sync all of the MailChimp contacts to this database. 

The problem we are trying to solve is this: We want to automatically sync unsubscribes from MailChimp to Zoho. When someone unsubscribes through a newsletter, we want to update the data in Zoho to show that they are an Opt-out.

Is this possible? Would we be able to:

- Update an Email Opt-out checkbox in Zoho?

- If we are to bring Contacts in from MailChimp, this would only be a people entered via certain specific forms 

- Can the integration sync with a certain MailChimp group and not the whole list?

- Setup the sync so that we only update fields when the email address is *already in* Zoho?

The tools we are looking into are these: Cazoomi ( https://syncapps.cazoomi.com/s/zohocrm/mailchimp) and Suvichar ( http://www.suvichartech.com/zoho-crm-mailchimp.php). Are either preferred for this type of setup?

Thanks,

Kim