How to Edit Signature in Outlook: A Complete Guide
- Mark Mendoza
- August 2, 2026
Your email signature is more than just your name at the end of your email. It is your personal identity or the right professional appearance for your brand that makes your messages look credible. We have multiple purposes, like changing & editing the Outlook signature. Therefore, it is crucial that you learn how to edit your signature in Outlook.
You will also learn how to edit your Outlook signature on Windows. Mac, Outlook Web App, and Outlook Mobile App in this guide.

How to Edit Signature in Outlook for Windows
If you’re using the Outlook desktop application on Windows, follow these steps:
1: Open Outlook
Launch Microsoft Outlook on your computer.
2: Open Outlook Options
Click:
File → Options
A new settings window will appear.
3: Go to Mail
From the left menu, select:
Then click:
Signatures
This opens the Signatures and Stationery window.
4: Select Your Signature
Choose the signature you want to edit.
If you have multiple signatures, select the correct one.
5: Edit the Signature
Use the editor to modify:
- Name
- Job title
- Company
- Address
- Phone number
- Website
- Images
- Hyperlinks
- Fonts
- Colors
- Formatting
6: Save Changes
Click:
OK
Then click OK again to save everything.
Your updated signature will now appear in new emails.

How to Edit Signature in Outlook for Mac
Mac users can update their Outlook signature in just a few steps.
Open Outlook
Go to:
Outlook → Preferences → Signatures
Choose the signature you want to edit.
Update the information as needed.
Click Save.
Your new signature will automatically be used according to your settings.

How to Edit Signature in Outlook Web (Outlook.com or Microsoft 365)
If you use Outlook in your browser:
1) Sign in to Outlook.
2) Click the Settings gear icon.
3) Select:
Mail → Compose and Reply
4) Your signature editor appears.
Edit:
- Text
- Links
- Images
- Formatting
- Contact information
5) Choose whether to automatically include the signature in:
- New messages
- Replies
- Forwards
Click Save.
That’s it!

How to Edit Signature in the Outlook Mobile App
The Outlook mobile app supports a simple text signature.
Android
Open Outlook. Tap your profile picture.
Go to:
Settings → Signature
Edit the text.
Tap the checkmark to save.
iPhone
Open Outlook. Tap your profile icon.
Go to:
Settings → Signature
Update the signature.
Save your changes.
Unlike the desktop version, the mobile app doesn’t support advanced formatting such as logos, tables, or custom fonts.
How to Add an Image or Logo to Your Signature
If you’re using Outlook on Windows, Mac, or the web:
- Open the Signature editor.
- Place the cursor where you want the image.
- Click the Insert Picture icon.
- Select your company logo or personal photo.
- Resize the image if necessary.
- Save your signature.
A clean, optimized logo enhances your professional appearance.
Conclusion
The quickest way to keep your emails professional and up to date is to amend your Outlook signature. It helps you to modify signs according to your preferences. A signature is one of the key points that may require a change due to different purposes; thus, it is essential you know how to alter or modify your signature in Outlook.
Outlook for Windows, Outlook for Mac, or the web version of Outlook or mobile devices; no matter what type of Outlook you use, this will only take a couple of minutes. Regularly checking your signature means that recipients will always have the right contact details, so it strengthens your professional or business brand. With every email you send, a properly crafted signature can leave an impression.
FAQ's
Yes. Outlook allows you to create multiple signatures and assign different ones for new emails, replies, and forwards.
In some organizations, IT administrators manage email signatures centrally. If the signature editor is unavailable, contact your IT department.
No. The Outlook mobile app primarily supports plain-text signatures and limited formatting.
Yes. Outlook desktop supports HTML-based signatures, allowing advanced layouts, images, tables, and clickable links.
Not always. Depending on your Outlook version and Microsoft account settings, signatures may need to be configured separately on desktop, web, and mobile.
