How to Add & Change Your Email Signature in Outlook - 2026

If your email signature is blank when you start a new message or you just need to update your contact info, you've likely missed the default settings step. It is frustrating to spend time designing a signature only for Outlook to refuse to display it on your outgoing mail.

Why signatures disappear

Even after you create a signature, Outlook defaults to 'no signature' for both new emails and replies. You must manually assign your created signature to those specific dropdown menus to make it visible.

Steps

1. 01
   Open Outlook and click the gear icon in the top right corner to access Settings
2. 02
   Type 'signature' into the search bar and click the 'Signatures' result
3. 03
   Click 'Add signature', type your details, and use the formatting tools to customize your text
4. 04
   Press Save to store your new signature
5. 05
   Locate the two dropdown menus at the bottom for 'New messages' and 'Replies/forwards'
6. 06
   Select your new signature from both dropdown lists to ensure it appears on all outgoing mail
7. 07
   Click Save again to apply the changes
8. 08
   If you are using the classic version of Outlook, go to File > Options > Mail > Signatures to find these same settings