How to Add a Logo to Your Email Signature

1. Email Signature Logo Best Practices: Size, Format, and Placement
2. How to Add a Logo to Your Email Signature by Email Client
3. How to Add a Company Logo to Team Email Signatures
4. Why Is My Email Signature Logo Not Showing?

Email signature with a logo can significantly boost your professional image and brand recognition Adding a logo to your email signature enhances your brand's visibility, especially if you are consistently sending emails for business purposes.

Adding a logo in your email signature promotes your brand with every message and strengthens your identity.This guide shows you how to add a logo in Gmail, Outlook, Apple Mail, Yahoo Mail, AOL, and on iPhone/iPad. It also includes tips on formatting and file size for a clear display.

Email Signature Logo Best Practices: Size, Format, and Placement

Before you add your logo, ensure the image is set up correctly. Follow these guidelines to avoid display problems.

• Format

Use PNG for logos with transparent backgrounds and JPG for photos or simple graphics. Avoid SVG, as it is not supported by many email clients. Also, it’s important to keep the file size under 50 KB for quick loading.

• Size

Recommended width: 150–300 pixels, height: usually under 80–100 pixels to keep the signature compact.

• Placement and Extras

Position the logo near your name and contact details. Add a link to your website. Use a light or transparent background for readability in all modes. After editing, send a test email to yourself and check how it looks in Gmail and Outlook.

How to Add a Logo to Your Email Signature by Email Client

Gmail 

1. Open Gmail Settings – Log in to your Gmail account, click the gear icon, and choose See all settings.
2. Go to the Signature Section – Scroll to the General tab and use the options in the Signature area.
   
   
3. Upload or Paste Your Logo Image – Right-click and copy and paste an image URL, or upload a logo file from your computer, web, or Google Drive.
   
4. Adjust the Size and Alignment – Click on the image to select Small, Medium, Large, or Original Size. Keep the correct aspect ratio for best results.
   
5. Save and Send a Test Email – Scroll down, click Save Changes, and send a test email to check how your logo appears.

You can also add links to your website or portfolio below the logo for more visibility.

Using the Newoldstamp Gmail signature editor, you can easily manage and customize your Gmail signature before adding your logo.

Outlook 

1. Open signature settings (classic Windows: File → Options → Mail → Signatures; web/New Outlook: Settings → Accounts → Signatures or Compose and reply).
2. Create or edit a signature.
3. Place the cursor where the logo should appear and use Insert Picture / Insert pictures inline.
   
   
4. Select your logo file (PNG or JPG recommended).
5. Resize by dragging a corner handle while keeping the aspect ratio locked.
6. Save and send a test message.

Full version-specific steps are in the Email Signature in Outlook with Logo guide.

 Apple Mail on Mac

1. Open the Apple Mail application on your Mac.
2. Click Mail in the Top Menu and select Preferences.
   
   
3. Go to the Signatures Tab.
4. Choose the Email Account where you want the signature.
5. Click the + button to create a New Signature.
   
   
6. Type your text details (name, title, contact info).
7. Drag and drop your logo image into the Signature Box.
8. Resize or reposition the logo if needed.
9. Assign the signature to your account (Default or Manual).
10. Compose a New Email to test the logo signature.

By following these steps, you're ensuring that every email you send from your Apple Mail account carries a signature that reflects your brand image. Apple Mail also supports HTML markup, so you can add styling similar to web signatures. Take advantage of email signature templates, design options, and customization features provided by your email platform to create an email signature with a logo that truly stands out and serves as an extension of your brand.

Yahoo Mail 

1. Log in → Gear icon → More Settings → Writing email.
   
   
2. Enable the signature.
3. Place the cursor where you want the logo.
   
4. Copy the hosted image and paste it into the editor (Ctrl/Cmd + V).

Adjust size and alignment if possible, save, and send a test email.

AOL Mail

1. Go to Options / Settings → Mail Settings or More Settings → Compose / Writing email.
2. Switch to rich text/HTML and enable the signature.
3. Paste a hosted logo image or use the “Add an image” option with a public image URL.
   
   
4. Save the setting and test.

By following these steps, you'll effortlessly add a logo to your AOL email signature. In AOL, you can also add a short word tagline under your logo to reinforce brand identity. Now, every time you compose a new email or respond to messages, your branded and logo-enhanced signature will leave a lasting impression.

How to Add a Company Logo to Team Email Signatures

Adding a logo to your email signature is more than just a design choice - it’s a marketing tool. Every email you send becomes a piece of brand communication. A well-placed logo builds trust with customers, improves product visibility, and reinforces your corporate identity.

1. Use one approved logo file that is the same size, format, and file size as the others. 
2. Create a single signature template that includes the logo, contact details, and any necessary text. 
   
   
3. Share the same template with all employees so they can use an identical version. 
4. Prefer a centralized tool that lets you update the logo once and apply the change to all users. 
5. Test the final signature in both Gmail and Outlook.

Now you’re ready to get started and design a professional email signature that supports your business growth.

Why Is My Email Signature Logo Not Showing?

Here are common reasons why your logo might not appear in your email signature:

• Logo shows as an attachment. This happens if you add the image as a local file instead of a public URL. Upload the image online and use the URL.
• Images are blocked. Many email programs, like Outlook, block images by default. The recipient must enable images to see them.
• Broken URL. The link may be outdated, or the file may have been moved. Check the URL in a private browser window to ensure it loads.
• Wrong format or size. SVG files don’t work, and large files may fail. Use PNG or JPG files under 50 KB.
• Old signature or cache. Clear your browser cache and save the signature again. Send a new test email afterward. If you're on an Apple device, check settings that may block remote content.

Once the logo is correct, your emails will reflect your brand better. For consistency with social icons and banners, use an email signature generator.