Thanks for adding this jake, but one question. Not all users have a rich mail client installed. If we select that option we get error without mail client installed. Maybe a more simple solution is that you leave the options for email there and just have a small section under email sessions that has a textbox populated with the session so you can just copy it....example below:

y
In fact now that I think about it, it would be really slick to have it listed for all session types. This way if user X is having trouble clicking the join button or you want to have a colleague join a session you can just copy it from any session and email or paste it in a chat transcript.