The footer in an  email created by Outlook is called a signature.

To create you own signature in Outlook:

1. Open Outlook and select Tools / Options
2. Click the Mail Format tab
3. Click the Signatures button at the bottom
4. Click the New... button
5. Type a name for you to identify this signature (as you can create more than one which can be handy)
6. Click the Next button
7. Now type what you wish to display in the signature (see news item called Will your Company website or Email attract a fine? )
8. Click Finish button then OK button
9. Now ensure that the signature you just created is shown in the Signature for new messages and Signature for replies and forwards
10. Finally click the OK button at the foot of the options box