If you are looking for a Zoho CRM & Mailchimp integration, then please take a free trial here: 

https://www.pipemonk.com/integrate/zoho/mailchimp

PS.: Pipemonk also integrates Zoho with other apps, e.g. QuickBooks, Xero, Zendesk, Shopify, Marketo etc.

Thanks,

Rakesh |  Pipemonk