Identify user by email and username across devices.
I would like the option to identify the user by username and email to chat on a subdomain.
Let's say someone starts a chat at trengo.com, and logs in to app.trengo.com (lot's of SaaS products work with subdomain). I want the chat to continue instead of opening a new chat. (Same ip address, same chatbox).
Also when someone switches their devices. And is logged in into the same account. I want the chat to continue as well.