I generally like to keep my team mails in my regular e-mail folders for each catagory, then pick which personally written mail I would like to use.
Since my yahoo e-mail tab is always open, its very easy to tab over and just open the specified folder and copy my message, then tab back to SFI and paste my message to my Team Mail that I am sending out and can modify it as needed.
To me it is a very fast and easy method to use. Simple huh?