Create a signature in Outlook and set it to add automatically to new messages and replies.
In classic Outlook, click File, Options, Mail, then the Signatures button. In new Outlook or Outlook on the web, click the gear icon, then Mail, then Compose and reply.
Click New, type a name like Work, then type your signature in the editing box — name, title, company, and phone. Use the formatting toolbar to adjust font, color, and add a logo or link.
In the Choose default signature area, set your email account, then pick this signature for New messages and, if you want, for Replies/forwards from the drop-down menus.
Click OK (or Save), then open a new email to confirm the signature appears automatically. Adjust spacing or details if needed.