++ Persons are reliably identified, as long as the account is the I-MATH one - an email sender address is easy to fake.
- + Chat is efficient for quick notices or discussions.
+ Chat keeps your email inbox more clean: only the important things will be sent as email.
- + Easy creation of channels helps to bring people together for specific topics each - think of a channel like an 'email list'.
- - Another level of notifications.
- - Too much traffic (chats) on a channel - too little work done in the same time.