How to add signature in outlook

Last updated: April 1, 2026

Quick Answer: Create an email signature in Outlook by going to File > Options > Mail > Signatures. Build your signature with text and formatting, then set it as default for new messages and replies.

Key Facts

Understanding Email Signatures

An email signature is a block of text, images, or formatted content that automatically appears at the end of your emails. In Outlook, signatures help you present a professional image, provide contact information, and add branding to your correspondence.

Desktop Outlook Setup

For Windows Outlook: Click File, then Options, select Mail, and find Signatures. Click New to create a signature. Type your name, job title, phone number, and any other information you want to include. Use the formatting toolbar to adjust fonts, colors, and alignment.

For Mac Outlook: Open Outlook, click Outlook in the menu, select Preferences, then Signatures. Click the plus icon to create a new signature and customize it with your details.

Customization Options

Outlook's signature editor supports:

Setting Default Signatures

After creating your signature, you must assign it as default. In the Signatures window, select your signature from the list. Under Choose default signature, select which account it applies to. You can set different default signatures for New messages and Replies and forwards.

Adding Images and Logos

To insert an image: Click the image icon in the signature editor, browse to your file, and insert it. Keep file sizes small for email compatibility. Position images using text wrapping options. Note that recipients must have image display enabled to see embedded images.

Mobile and Web Versions

Outlook on the web and mobile apps have limited signature features. Mobile signatures are typically set in app settings rather than the full signature editor. Web Outlook allows basic text signatures but not complex formatting.

Related Questions

Can I have different signatures for different email accounts in Outlook?

Yes, Outlook lets you create multiple signatures and assign different ones to each email account. In the Signatures settings, select the account from the dropdown menu before assigning each signature.

How do I add an image to my Outlook signature?

In the signature editor, click the picture/image icon, select your file, and insert it. Keep images under 50KB for optimal email delivery. You can resize and position images using the editor's formatting options.

Why isn't my signature appearing in replies and forwards?

By default, Outlook doesn't add signatures to replies and forwards. Go to Signatures settings and explicitly set a signature for 'Replies and forwards' to enable it on all outgoing messages.

Sources

  1. Microsoft Support - Create and Add a Signature CC-BY-4.0
  2. Wikipedia - Microsoft Outlook CC-BY-SA-3.0