Go to http://mail2.appsmail.com. Then type in your full email address and password in the appropriate fields, then click "Login".
STEP II:
My Today Page
After logging into your account, click on the "Settings" menu in the upper left corner & select "My Settings"
STEP III:
My Settings
Click on the "Compose" tab.
STEP IV:
My Settings
Enter the text that you would like to appear at the bottom of all of your outgoing emails into the rich-text field provided to the right of "Signature".