Attaching deal emails to a deal record in Creator

I'm developing a customer portal using Zoho Creator. In the portal, my customers can see all their deals.
One of the things I love about Zoho CRM is how it collects all the emails related to a deal on the deal record. I want to add that same functionality to the portal.

Can Zoho Creator attach all the deal emails to a deal record?
If so how?

Thanks for your help!