Post Reply as the Group

In the top right of your Beloit email account, click Settings > Settings.
Click the Accounts and import or Accounts tab.
In the "Send mail as" section, click Add another email address.
Enter your name and the address you want to send from.
Click Next Step > Send verification.
For school or work accounts and the username and password on that account.
Click Add Account.
In the message, click the From line.
(If you don't see this, click the space next to the recipient's email.)
Select the address to send from.