Can i create in app inbox with zoho?

Can i create in app inbox with zoho?

I'm using zoho desk and soon zoho crm as well, 

I was wondering as a saas b2b2b company if I could somehow utilize zoho and create some sort of in app msging between the initial client of my to his end client (who is a client of mine as well) 

Example: I have business which his clients are my clients as well, I want to enable chats between the end client to his provider. Let's say the end client want to submit a question to his provider on my SaaS platform? 

Thanks