Team chats for specific emails & share drafts

How can we chat with team mates on specific emails in the same thread and share drafts with team mates?

eM Client has chat support and file sharing built-in at the right corner of the program in the sidebar. See the following page below extract.

“It supports All common chat services”

Stay in touch with your contacts via Google Talk, Jabber or any other XMPP based service

“File transfer support”

You don’t need to interrupt your chat flow to send files since you can do it directly in the Chat window.

but the chat doesn’t go to a specific email in the same thread. If the notes could be shared between teams that would help.
this is how Loop email does it