This guide will show you how to add or change an email signature in Office 365
Once you are ready to set up your email signature, log into your Office 365 email account using a web browser. At the top right, click the settings icon. Select Options.
On the left Options menu, under Mail, Layout, select Email signature. You will then see the Email Signature section on the right hand side of the screen.
Paste your new or updated email signature in the text box provided, and select the 2 check boxes above to include your email signature on new messages, forwards and replies.
Be sure that emails are being sent in HTML format and not plain text format. In the left expandable menu under Mail, then layout, select Message format. Check that “Compose messages in this fomat” is set to “HTML” and not “Plain Text”. Click Save at the top of the page.
Click to compose a new email and see your new signature in action!