Email disclaimer or compliance footer
This article describes a feature for Google Apps for Work and Google Apps for Education (K12) customers only.
To add an email disclaimer to all email sent from your domain follow these steps:
1. Enable the Google Message Security service for your domain as described here.
2. Set Postini as your outbound mail gateway as described in step one here. When you enable the Postini service you'll be provided with the outbound mail gateway details.
3. Configure a compliance footer in the Postini console and apply it to your users as described here.