If your organization would like to have a standardized email footer on all outgoing emails, then continue on this article.
This particular setting is useful for organizations such as law firms or firms that want to display a confidentiality disclaimer or company messages at the bottom of each email
Log into the Webmail for the domain administrator
Goto Domain Settings on the top menu then General on the left side menu
You should now see a Footer box on the right hand side. Enable Override footer settings for this domain and Enable footer for all messages
Now you can click on the pencil icon beside Footer to modify the outgoing footer message