How to add signature in outlook in 2025?

Go to Settings > Accounts > Signatures in the new Outlook, select the right account, select New Signature, give it a name, and make your changes. You can let the rule operate automatically with every new email or add it to your email manually.
 
To add a signature in Outlook 2025, go to Settings > Mail > Compose and reply. In the Signature section, click New, name your signature, and enter your desired text and formatting. Choose when to use it—new emails or replies—and click Save. Your signature will now appear automatically in your selected email types.
 
Here’s how to add a signature in Outlook (2025):
  1. Open Outlook.
  2. Click on Settings (gear icon).
  3. Choose Mail > Compose and reply.
  4. In the Email signature box, type your signature.
  5. Choose when to use it (new emails, replies, etc.).
  6. Click Save.

That’s it—you’re done!
 
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