- Click the settings gear menu in the upper right corner.
- Select Options.
- Under Mail > Layout, select Email signature.
- In the text box, create your signature. You can modify the formatting with the mini toolbar.
- Check the Automatically include my signature on messages I send box to append your signature to all outgoing emails including replies and forwards.
- Click Save.
If you’ve chosen not to automatically add signatures to your Outlook Web App emails, you can manually add it by clicking the Insert
button at the top of an email and selecting Your signature