You can create a default signature for your MIX Gmail account. If you add a signature, it will be automatically added to end of the emails you send from that account.
How do I add a signature to my MIX Gmail account?
Login to your MIX email account.
Click on the little gear in the top-right corner.
From the drop-down menu, click Settings.
While on the General tab, scroll down to the Signature section.
Type your signature. (Check out WVU's recommended email signature).
Click Save Changes.
For additional information, check these categories in the Knowledge Base:
Academic Tools and Resources
Need assistance? See the following related services:
Email and Calendar
Academic Tools and Resources services