Email to Salesforce Equivalent - BCC to ZOHO?

Email to Salesforce Equivalent - BCC to ZOHO?

Is there a feature whereby I can send any old email while BCC'ing to ZOHO and the associated contact will log the email?  This is a standard functionality for most CRMs, and I'm having a hard time figuring out if it's doable.  I see the ZOHO dropbox, but it appears to be limited to only 5 contacts....is this correct?  Could someone provide some insight for me.

Thanks!