Change Or Update Email Signature In. If there isnt an existing signature click New. The signature looks similar to but not exactly like the one you created.

Step 3 Replace the existing signature with your desired new one. Under Email click Signatures. The Signatures and Stationery window will appear.
Now type or modify the signature under Edit signature.
Select the File tab. The Signatures and Stationery window will appear. In the Email Signature tab select the signature that you want to change. How to change your email signature block in Outlook 2007 2010.