Yes, you may add a signature line if your email program supports it. Please refer to the documentation for your email program for details on how to set up a signature line.
Directions if using webmail
1. Login to webmail and select "Settings"
2. Click on Signatures under My Settings
3. Select the "Signatures" tab
4. Select the "Add" button
5. Give the signature a "Name" (internal use only) and enter the signature in the large box below the "Name"
6. Select the "Save" button
The signature will be automatically added to emails sent out through the program where the signature was added.