Edit your name, email and contact details, and that will automatically amend your signature at the same time.
- Click on your email address at the top right of your screen
- Select "My Settings"
- Don't forget to scroll down and click "Update Profile" when you are done
Please note that if you are updating your email address, you might need to reconnect to Outlook/Gmail so that the emails you sent will be forwarded from the new email. Click here to see how.