How to Setup Email Signature in Outlook App and Outlook Web Access (OWA)
Description:
This article will guide you on how to setup email signature in Outlook App and Outlook Web Access (OWA).
Solution:
A. Setting up email signature in Outlook Web Access (OWA):
1. Access https://outlook.office.com/mail or https://outlook.office365.com/mail and log-in your Office 365 account.

2. After signing in, click on the Settings icon at the upper-right corner of the browser.

3. Click Account -> Signatures

3. In 'Email Signature' section, create new signature by clicking "New Signature" and set a signature name then paste your desired email signature in the empty box.
Note:- If your email signature has images, copy the image from one of your sent items in OWA, not directly from your local computer. Copying your signature format directly from your local computer will create broken image.

4. You may also select your desired default signatures.
5. Click Save once satisfied with your setup.
B. Setting up email signature in Outlook App:
1. From Outlook App, click File > Options.

2. Select the Mail tab and then Signatures.

3. Select New and type in a name for the signature you’re creating.

4. Enter the information you would like to include in your email signature. There are plenty of formatting options, i.e. adding links, changing fonts, adding an image.

5. You may also visit this link: Create an email signature