M365 — Email Signature Setup

Creation date: 7/24/2026 10:01 AM    Updated: 7/24/2026 10:01 AM

1. Set Up Signature — Outlook Desktop

  1. Open Outlook.
  2. Click File → Options.
  3. Select Mail → click Signatures...
  4. Click New, and give your signature a name
  5. Enter your signature details in the editing box.
  6. Under Choose default signature, set this signature for New messages and Replies/forwards.
  7. Click OK to save.
  8. ✅ Desktop signature setup complete

2. Set Up Signature — Outlook Web (OWA)

  1. Go to outlook.office.com and sign in.
  2. Click the gear icon (Settings) → View all Outlook settings.
  3. Go to Mail → Compose and reply.
  4. Enter your signature details in the text box.
  5. Check the boxes to automatically include your signature on new messages and replies/forwards.
  6. Click Save.
  7. ✅ Web signature setup complete