MailChimp/Zoho Integration - Best Option for Configuring

MailChimp/Zoho Integration - Best Option for Configuring

Hi Zoho Support,

We are trying to integrate MailChimp with Zoho. The first tool we've tried is Cazoomi. I am not sure this is the right tool for us.

We do not use Zoho Campaigns. Rather, we use Zoho for Contact and Task tracking. We use MailChimp for our mailing lists. This is what we need to do:
  • In Zoho we have created a boolean checkbox for e-mail opt out (in Zoho). We need to trigger this field to be a "Yes" value if someone unsubscribes from MailChimp
The Zoho Email Opt Out field is on the Contact record. 

Is it possible to do this? Is there another integration tool we should try?

Thanks,
Kim