How to add X (formerly Twitter) to your email signature

If you want to add the X logo to your email signature, you need more than just a link. You need the correct icon, the right size, and formatting that displays properly across Outlook, Gmail, Apple Mail, and mobile devices.

X, formerly Twitter, updated its branding in 2023. Many people still search for “Twitter logo for email signature,” but the current official mark is the X logo. Using outdated icons can make your signature look inconsistent or unprofessional.

This guide covers:

• How to add the X logo for email signature in Outlook

• How to add Twitter to email signature in Gmail

• How to insert an X icon in Apple Mail

• Recommended size and file format for the X logo

• Best practices for social media icons in email signatures

If you're updating your own signature, these steps will walk you through the process. If you're managing email signatures across a team, you’ll also see where manual edits can create brand inconsistency or compliance gaps.

Let’s start with what you need before adding the X icon.

Where to get the X logo for your email signature

If you’re adding the X logo to your email signature, use the official brand asset. Many people still use the old Twitter bird or download low-resolution icons from image search results. That leads to blurred images, incorrect proportions, or outdated branding.

Download the current X logo directly from the official X brand guidelines page. This confirms you’re using the correct mark and color specifications.

Best file format for the X logo in an email signature

Email clients handle image formats differently. For consistent display:

• PNG is the safest option for Outlook, Gmail, and Apple Mail

• SVG provides sharper scaling, but some email clients block or fail to render SVG correctly

• Avoid JPEG, which can create blurred edges on dark backgrounds

For most users, a transparent PNG works best.

Best size for the X logo in an email signature

If you’re wondering what size the X logo should be in an email signature, follow these guidelines:

• 24px to 32px height for standard signatures

• Keep all social media icons the same height

• Maintain file size under 50KB to prevent loading issues

• Add 6–12px spacing between icons

This size range works well in Outlook signatures, Gmail signatures, and Apple Mail, and scales properly on most mobile devices.

Test your X icon on desktop and mobile

After adding the X logo to your email signature:

• Send a test email to yourself

• Check it in Outlook desktop

• Check it in webmail

• Check it on a mobile device

Some clients compress images automatically. If your icon looks pixelated on mobile, reduce dimensions slightly and re-export the PNG.

For organizations managing signatures centrally, inconsistent icon sizing is one of the most common brand drift issues when users edit signatures manually.

How to add the X logo to an Outlook email signature

If you’re using Outlook, you can add the X logo to your email signature in both desktop and web versions. The process is similar, but image handling behaves slightly differently in each.

Outlook uses Microsoft Word’s rendering engine for signatures. That means image size and alignment matter more than in Gmail.

Add the X logo to Outlook desktop (Windows or Mac)

To add the X icon to your Outlook desktop signature:

1. Open Outlook

2. Select File > Options > Mail

3. Click Signatures

4. Choose an existing signature or create a new one

5. Place your cursor where you want the X logo to appear

6. Click the Insert Picture icon

7. Upload your X logo PNG (24–32px height recommended)

8. Click the image

9. Select Insert Hyperlink

10. Paste your X profile URL (for example, https://x.com/yourhandle)

11. Click OK, then Save

Send a test email and check:

• Icon sharpness

• Spacing between icons

• Alignment with text

If you’re adding multiple social media icons in your Outlook signature, place them in a horizontal row beneath your contact information. Keep consistent height across all icons.

Add the X logo to Outlook on the web

To add the X icon in Outlook Web:

1. Log in to Outlook in your browser

2. Click the Settings gear icon

3. Select Mail > Compose and reply

4. Click inside the signature editor

5. Use Insert pictures inline to upload your X logo

6. Highlight the image

7. Click the Link icon

8. Paste your X profile URL

9. Save changes

Outlook Web may slightly resize images automatically. If your X logo looks distorted, resize it before uploading rather than adjusting inside the editor.

Best practices for X and Twitter icons in Outlook signatures

When adding Twitter or X to your Outlook email signature:

• Use a transparent PNG

• Keep icon height between 24–32px

• Maintain consistent spacing

• Avoid oversized images

• Test on desktop and mobile

Outlook is less forgiving with formatting than Gmail. Small inconsistencies in icon size or spacing are more noticeable.

If you manage signatures across a team, manual Outlook edits often lead to uneven icon sizing and outdated logos over time.

How to add Twitter to your Gmail email signature

If you want to add Twitter to your Gmail signature, you’ll need to insert the X logo as an image and link it to your profile URL.

This works in both personal Gmail accounts and Google Workspace accounts, although Workspace admins may restrict signature editing.

Add the X logo to Gmail (desktop)

1. Open Gmail in your browser

2. Click the Settings gear icon

3. Select See all settings

4. Scroll to the Signature section

5. Create a new signature or edit an existing one

6. Position your cursor where the X icon should appear

7. Click Insert image

8. Upload your X logo (24–32px height recommended)

9. Select the image

10. Click the Link button

11. Paste your X profile URL (for example, https://x.com/yourhandle)

12. Scroll down and click Save changes.

13. Send a test email to confirm the link opens correctly.

Important Gmail limitations

Before adding social media icons to your Gmail signature, keep these points in mind:

• Gmail may compress images automatically

• Drag-resizing images inside Gmail can distort proportions

• Gmail mobile app does not support inserting image-based signatures the same way desktop does

• Some Google Workspace administrators centrally control signatures

If your X logo appears blurry, resize it externally before uploading rather than adjusting it inside Gmail.

Best practices for Gmail social media icons

When adding Twitter or X to your Gmail email signature:

• Use a transparent PNG

• Keep all social media icons the same height

• Maintain consistent spacing

• Test in both desktop and mobile views

Gmail strips certain HTML styling. Simpler formatting performs more reliably across devices.

If your organization manages signatures centrally in Google Workspace, manual edits can create inconsistencies across departments and regions.

How to add the X logo to your Apple Mail email signature

Apple Mail allows you to add image-based signatures, including the X logo, directly inside the signature editor. The process is simple, but image handling can vary depending on the recipient’s email client.

Add the X icon in Apple Mail (Mac)

To add the X logo to your Apple Mail signature:

1. Open the Mail app

2. Select Mail > Settings

3. Click the Signatures tab

4. Choose your email account

5. Create a new signature or edit an existing one

6. Drag and drop your X logo PNG into the signature field

7. Click the image

8. Press Command + K

9. Paste your X profile URL (for example, https://x.com/yourhandle)

10. Save changes

Send a test email to confirm:

• The X icon displays inline

• The link opens correctly

• The image does not appear as a separate attachment

Apple Mail signature limitations

Before adding social media icons in Apple Mail, consider the following:

• Apple Mail may convert images into attachments if formatting is altered

• Resizing images inside the editor can distort proportions

• Some HTML styling may change when the email is received in Outlook

• Signature formatting can shift when forwarding messages

To reduce display issues:

• Use a transparent PNG

• Keep the X logo between 24–32px height

• Avoid excessive spacing or complex formatting

• Send cross-client test emails

Apple Mail signatures can look correct on Mac but render differently in Outlook or Gmail. Testing across platforms is important.

Best practices for adding the X logo to your email signature

Adding Twitter or X to your email signature is straightforward. Creating a professional result that displays correctly across email clients requires more structure.

Use consistent icon sizing

If you’re including multiple social media icons in your email signature:

• Keep all icons between 24–32px height

• Use equal spacing between icons

• Align them horizontally

• Match visual weight across platforms

Uneven icon sizing is one of the fastest ways to make a signature look inconsistent.

Place social media icons beneath contact details

The most reliable structure for a professional email signature is:

Name
Title
Company
Phone | Email
Social media icons row

Avoid placing icons inline with text or above your name. Clear hierarchy improves readability and reduces layout issues in Outlook.

Add ALT text for accessibility

Some email clients block images by default. Adding ALT text to your X logo helps recipients understand the purpose of the icon if images don’t load.

Use simple ALT text such as:
“Follow us on X”

This improves accessibility and helps maintain clarity.

Consider dark mode rendering

Dark mode can invert or obscure certain images. If your X logo uses a dark background, it may disappear in dark mode email clients.

Using a transparent PNG version of the X logo improves visibility across light and dark themes.

Keep file sizes small

Oversized icons increase email weight and can cause formatting shifts in replies or forwards.

Best practice:

• File size under 50KB

• Avoid unnecessary padding around icons

• Export images at final display size

Test across email clients and devices

Before publishing your updated email signature:

• Send a test email to Outlook desktop

• Check in Outlook Web

• Open in Gmail

• View on mobile

Email clients render HTML differently. Testing reduces unexpected layout issues.

Best practices for adding the X logo to your email signature

Adding the X logo to one email signature takes minutes. Managing social media icons across hundreds or thousands of users is different.

When employees edit signatures individually, organizations commonly see:

• Mixed use of old Twitter and new X logos

• Uneven icon sizing

• Incorrect or outdated profile URLs

• Formatting inconsistencies between Outlook and Gmail

• Signatures that render differently on mobile

Email signatures are part of your brand surface area. If they’re managed locally, consistency declines over time.

For organizations using Microsoft 365, Google Workspace, or hybrid Exchange environments, signatures can be applied centrally using Exclaimer. That allows teams to:

• Standardize icon size and placement

• Control approved social media links

• Update logos instantly during rebrands

• Maintain consistent formatting across desktop, web, and mobile

• Reduce manual IT support requests

From incorporating social media icons like X (formerly known as Twitter) to customizing the design of your signatures, Exclaimer makes it easy to maintain a professional and consistent brand image on all business emails.

With over 75,000 businesses already using Exclaimer, start elevating your email game and get yourself a free trial today.