How to Add a Phone Number in Your Email Signature

A polished email signature with a phone number makes your messages feel complete and helps people reach you without digging through old threads.

In this guide, you’ll learn exactly how to add one manually in Gmail, Outlook, or Apple Mail, or create it in minutes with the MySignature email signature generator. You’ll also get practical formatting advice and simple HTML tips to make your phone link look clean, clickable, and reliable across every device.

Table of Contents

• How to Add a Clickable Phone Number to an Email Signature
• Using an Email Signature Generator
• Manually in Gmail, Outlook, Apple Mail
• How to Format a Phone Number Link
• HTML Tips for Styling Phone Links in Email Signatures
• Should You Add More Than One Phone Number?

How to Add a Clickable Phone Number to an Email Signature

A phone number in your email signature is useful; a clickable one is practical.

When your phone number in an email signature can be tapped or clicked, the whole process of reaching you feels effortless. The person reading your message doesn’t have to copy digits or fumble between apps; one click and the call starts. The pinnacle of great user experience!

On a mobile phone, that smooth information flow means a faster response and fewer missed opportunities. For business communication, it can shorten decision cycles and make you easier to reach for customers, which never hurts.

There are two reliable ways to set this up. You can create the click-to-call link manually inside your email client, or you can use an email signature generator that automates the entire setup. The first approach gives you full control; the second gives you speed and precision. Let’s look at both.

Using an Email Signature Generator

If you’d rather skip the trial-and-error part, a signature generator will get you there faster. These tools are designed to produce a clean, professional email signature with phone number that works perfectly across all email platforms—desktop, web, and mobile. They remove the guesswork from coding and formatting, which makes a big difference when consistency matters.

MySignature is one of the simplest ways to do this. It’s a visual builder that lets you design a professional HTML signature in minutes:

1. Sign in to MySignature

Create an account or log in. It only takes a moment!

2. Design your signature

You can start from scratch or select one of the predesigned templates. The variety is wide enough to match any brand or personality, whether you’re building a minimal business email signature or something more expressive.

3. Add your number

In the Contacts section under the General tab, click Add field and choose Phone.

4. Enter it cleanly

Type your digits without symbols or spaces. The platform adds the linking format for you, ensuring accuracy in the contact details.

5. Make it stand out

Use an icon if you want extra visibility for your contact information. MySignature includes a solid set of phone icons and emojis, so you can add a touch of personality without looking unprofessional.

6. Save and integrate

When you’re satisfied with the look, save the design and connect it to your email client—Gmail, Outlook, or Apple Mail. The tool provides easy export for each platform.

More of a visual learner? Check out this quick video tutorial for creating an email signature with phone number in MySignature:

Manually in Gmail, Outlook, Apple Mail

If you prefer to do things manually, you can still create the same clickable link inside your email platform’s signature editor. It requires a few extra steps, but the setup is straightforward once you know where to look.

Gmail

1. Open Gmail and click the gear icon.
2. Choose See all settings, then scroll to Signature.
3. Select your existing Gmail signature or create a new one.
4. Type your phone number as part of your contact info.
5. Highlight it and click the link icon in the toolbar.
6. When prompted for a URL, enter tel: followed by your digits.
7. Click OK, then scroll down and select Save changes.

Outlook (Microsoft 365 / Web / Desktop)

1. Go to File → Options → Mail → Signatures in the desktop version. (On the web version, open Settings → View all Outlook settings → Compose and reply.)
2. Edit or create your signature in the Signature editor.
3. Add your number to your contact details, then highlight it.
4. Click the link icon, and type tel: followed by your number.
5. Adjust font, color, or alignment to match your brand guidelines.
6. Save, and set Outlook to automatically include the signature in new emails or replies.

Apple Mail

1. Open Mail → Settings → Signatures.
2. Choose your email account and click + to add a new signature.
3. Enter your full name, job title, and other essential contact details.
4. Highlight your phone number, right-click, and select Add Link.
5. Type tel: plus your number, then confirm.
6. Close the settings (Apple Mail saves automatically).

How to Format a Phone Number Link

A well-formatted phone number keeps your email signature with phone number readable, functional, and consistent across devices.

Follow these quick best practices:

• Use international format: Always write your link as tel:+14155552671. Avoid brackets, spaces, or dashes. This ensures compatibility on every platform and smooth dialing on a smartphone.
• Keep typography consistent: Match the font size and style of your number to the rest of your signature. Consistency signals attention to detail and strengthens your brand presentation.
• Stay minimal: Bold is acceptable, but skip fancy fonts, gradients, or unusual colors. Clean and legible beats decorative clutter every time.
• Avoid plain text: Unlinked plain text might auto-detect on some devices but not all.

HTML Tips for Styling Phone Links in Email Signatures

Once your number is clickable, a few HTML tweaks keep it consistent and professional—like a polished digital business card that works everywhere.

HTML format for “tel:” links

Use this structure:

<a href="tel:+15551234567">+1 (555) 123-4567</a>

It tells the email client the number is callable. Always verify the syntax before sending an email; even one extra space can break the link for your recipient.

Remove underline from phone link

To match your design, you can hide or restyle the underline:

<a href="tel:+15551234567" style="text-decoration:none; color:#000000;">+1 (555) 123-4567</a>

Some clients ignore custom styles, so prioritize color and alignment over perfection. Clean, readable, and uniform beats forced styling.

Open phone link in mobile

On a smartphone, a proper tel: link automatically launches the dialer—no extra code required. Test it on iOS and Android to confirm smooth behavior across devices.

Should You Add More Than One Phone Number?

In most cases, one number is enough. A single, clear contact point keeps your signature tidy and prevents confusion. Adding more can look cluttered unless there’s a real reason for it.

You can include several numbers if:

• You handle both office and mobile communication and need to separate them.
• Your team shares a central line for customer inquiries or products support.
• You manage international clients and want to show regional availability.
• You use multiple signatures for different departments or roles within the company.

MySignature makes this easy. It allows up to three clickable phone numbers in one banner layout, keeping formatting consistent alongside your social media profile, company logo, and other brand elements.