Is there somewhere an option to send an email to the whole team?

Hi,
One way to send mail to an entire team or project area is to use your Eclipse client to open the team or project area.  In the Members section, select the users you would like to email and then right-click and select Send Mail...  This option opens a new email in your default email client and puts all of the users' email addresses in the To field. 

This method sends mail through your default email client.  If you'd like a way to send an email through RTC, you can submit an enhancement request.