Add/Edit outlook email signature

1. Go to Settings

2. View all Outlook settings

3. Mail > Compose and reply.

4. Under the Compose and reply, here you can now edit your email signature. 

Under Email signature, type your signature and use the available formatting options to change its appearance.

You can also upload an image to your email signature.

Note: If you want your signature to appear at the bottom of all new email messages that you compose, select the Automatically include my signature on new messages I compose check box.

If you want your signature to appear on messages that you forward or reply to, select the Automatically include my signature on messages I forward or reply to check box.

If you don’t select these options, you can manually add your signature to a selected message. For details, see Manually add your signature to a new message below.

Select Save when you're done.