While in an active log, you can send messages by SMS and Email.
Click on "Send message".
Then type the name of the teams or users that you want to send a message to. It is also possible to send "To all".
Add your message, and select "Delivery method". By default, the message will be sent as both Email and SMS. But you can change this by clicking on the icons.
When you are done, click "Send message".