Show content of messages in email notifications
Current notifications say: "You're missing all the action in Microsoft Teams. XYZ has sent a new message to your chat with... Open Microsoft Teams"
As I do not have Teams open all the time and prefer to keep it that way, I have to log in to Teams just to check whether the message is important or not.
If the email notification contained the message - as done in Slack - I would be able to decide about its importance without logging in.