When someone clicks an email link on your website, they are showing high intent to contact you. Yet many businesses track form submissions meticulously while ignoring email clicks entirely.

Tracking mailto link clicks in Google Tag Manager is straightforward. Once configured, you can send this data to GA4, Google Ads, and any other platform to measure and optimize for email-based leads.

This guide walks through the complete setup process.

Email clicks represent valuable conversion signals.

High Intent Action

A visitor clicking your email address wants to contact you. This intent level sits between a page view and a form submission.

Mobile Behavior

Many mobile users prefer email over forms. Clicking a mailto link opens their email app directly, reducing friction.

Lead Attribution

Without tracking, you cannot attribute email leads to their traffic source. Google Ads cannot optimize for something it cannot see.

Complete Conversion Picture

If you only track form submissions, you undercount leads. Some visitors will always prefer email over forms.

Email links use the mailto: protocol. When clicked, they open the user’s default email client.

<a href="mailto:hello@yourcompany.com">Email Us</a>

Mailto with Subject Line

<a href="mailto:hello@yourcompany.com?subject=Website Inquiry">Email Us</a>

Mailto with Body Text

<a href="mailto:hello@yourcompany.com?subject=Inquiry&body=Hi, I found your website and wanted to ask about...">Email Us</a>

Google Tag Manager can detect clicks on any of these links by identifying the mailto: prefix in the URL.

Step 1: Enable Click Variables in GTM

Before creating triggers, enable the built-in click variables.

  1. In GTM, go to Variables
  2. Click Configure
  3. Enable these Click variables:
    • Click Element
    • Click Classes
    • Click ID
    • Click Target
    • Click URL
    • Click Text

These variables capture information about clicked elements, which we use to identify email links.

Step 2: Create the Email Click Trigger

Set up a trigger that fires only when someone clicks a mailto link.

Method 1: Click URL Contains mailto

  1. Go to Triggers → New
  2. Name it “Click - Email Link”
  3. Select “Click - Just Links”
  4. Choose “Some Link Clicks”
  5. Set condition:
    • Click URL
    • contains
    • mailto:
  6. Save

This trigger fires whenever a user clicks any link containing mailto: in the href attribute.

Method 2: Click URL Starts With mailto

For stricter matching:

  1. Go to Triggers → New
  2. Name it “Click - Email Link”
  3. Select “Click - Just Links”
  4. Choose “Some Link Clicks”
  5. Set condition:
    • Click URL
    • starts with
    • mailto:
  6. Save

Method 3: Using Regex for Multiple Conditions

If you need to match specific email addresses:

  1. Set condition:
    • Click URL
    • matches RegEx
    • ^mailto:(sales|support|info)@yourcompany\.com

This only tracks clicks to specific email addresses.

Step 3: Create the GA4 Event Tag

Send email click data to Google Analytics 4.

  1. Go to Tags → New
  2. Name it “GA4 Event - Email Click”
  3. Select “Google Analytics: GA4 Event”
  4. Configuration Tag: Select your GA4 Configuration tag
  5. Event Name: email_click
  6. Add Event Parameters:
Parameter NameValue
email_address{{Click URL}}
link_text{{Click Text}}
page_location{{Page Path}}
  1. Set trigger to “Click - Email Link”
  2. Save

Cleaning Up the Email Address

The Click URL includes the mailto: prefix. To capture just the email address, create a custom variable.

  1. Go to Variables → New
  2. Name it “Email Address Clean”
  3. Select “Custom JavaScript”
  4. Enter:
function() {
  var clickUrl = {{Click URL}};
  if (clickUrl && clickUrl.indexOf('mailto:') === 0) {
    // Remove mailto: and everything after ?
    var email = clickUrl.replace('mailto:', '').split('?')[0];
    return email;
  }
  return clickUrl;
}
  1. Save

Now use {{Email Address Clean}} instead of {{Click URL}} in your event parameters.

Step 4: Create the Google Ads Conversion Tag

Track email clicks as conversions in Google Ads.

First: Create the Conversion Action in Google Ads

  1. In Google Ads, go to Goals → Conversions → Summary
  2. Click “New conversion action”
  3. Select “Website”
  4. Choose “Manual” setup
  5. Configure:
    • Name: “Email Link Click”
    • Category: Contact
    • Value: Assign a value (e.g., $25)
    • Count: One conversion per click (recommended)
  6. Copy the Conversion ID and Conversion Label
  7. Save

Then: Create the Tag in GTM

  1. Go to Tags → New
  2. Name it “Google Ads - Email Click Conversion”
  3. Select “Google Ads Conversion Tracking”
  4. Enter Conversion ID and Conversion Label
  5. Set trigger to “Click - Email Link”
  6. Save

Step 5: Test the Implementation

Verify everything works before publishing.

Using GTM Preview Mode

  1. Click Preview in GTM
  2. Enter your website URL
  3. Navigate to a page with an email link
  4. Click the email link
  5. Check the Preview panel:
    • “Link Click” event should appear
    • Your email click tags should show as “Fired”
    • Variables should show correct values

Checking Variable Values

In Preview Mode, click on the Link Click event and check:

Verifying in GA4

  1. Open GA4 DebugView (Admin → DebugView)
  2. Click an email link on your site
  3. Look for the email_click event
  4. Check that parameters are populated correctly

Step 6: Handling Edge Cases

Real websites have variations that require additional handling.

Some sites wrap mailto links in button elements:

<button onclick="location.href='mailto:hello@company.com'">
  Contact Us
</button>

This does not trigger “Click - Just Links” because there is no <a> tag.

Solution: Use “Click - All Elements” and match based on Click Element or the onclick attribute.

JavaScript may generate email links after page load:

document.getElementById('email-btn').href = 'mailto:' + 'hello' + '@' + 'company.com';

Solution: GTM’s click tracking works on dynamically generated elements. Just ensure the final href contains mailto:.

Email links inside iframes from different domains cannot be tracked by your GTM container.

Solution: Work with the iframe source to implement their own tracking, or restructure to avoid iframes.

Multiple Email Addresses

If your site has different email addresses for different purposes:

<a href="mailto:sales@company.com">Sales Inquiries</a>
<a href="mailto:support@company.com">Customer Support</a>
<a href="mailto:careers@company.com">Job Applications</a>

Track them all with one trigger, but differentiate in reporting using the email address parameter.

Or create separate triggers and tags for each:

Advanced: Extracting Email Components

For detailed analysis, extract parts of the mailto URL.

Variable: Email Domain

function() {
  var clickUrl = {{Click URL}};
  if (clickUrl && clickUrl.indexOf('mailto:') === 0) {
    var email = clickUrl.replace('mailto:', '').split('?')[0];
    var domain = email.split('@')[1];
    return domain || '';
  }
  return '';
}

Variable: Email Subject

function() {
  var clickUrl = {{Click URL}};
  if (clickUrl && clickUrl.indexOf('subject=') !== -1) {
    var subjectMatch = clickUrl.match(/subject=([^&]*)/);
    if (subjectMatch) {
      return decodeURIComponent(subjectMatch[1]);
    }
  }
  return '';
}

Variable: Email Department

Map email addresses to departments:

function() {
  var email = {{Email Address Clean}};
  if (!email) return 'unknown';
  
  if (email.indexOf('sales') !== -1) return 'sales';
  if (email.indexOf('support') !== -1) return 'support';
  if (email.indexOf('info') !== -1) return 'general';
  if (email.indexOf('careers') !== -1) return 'hr';
  
  return 'other';
}

Use these variables as event parameters for richer reporting.

Tracking Email Clicks as Micro-Conversions

Email clicks may not be your primary conversion, but they provide valuable signals.

Setting Conversion Value

Assign a value based on your average lead worth:

Primary vs Secondary Conversions

In Google Ads:

  1. Go to Goals → Conversions → Summary
  2. Find your email click conversion
  3. Click to edit
  4. Set as “Secondary” if form submissions are primary

Secondary conversions appear in reports but do not affect Smart Bidding directly.

Using for Audience Building

Create audiences based on email clickers:

Combining with Other Contact Tracking

Email clicks should be part of a complete contact tracking strategy.

Track All Contact Methods

Create a Contact Event

Push a standardized event for any contact method:

// For email clicks
window.dataLayer.push({
  event: "contact_intent",
  contact_method: "email",
  contact_target: "sales@company.com",
  page_location: window.location.pathname
});

// For phone clicks
window.dataLayer.push({
  event: "contact_intent",
  contact_method: "phone",
  contact_target: "555-123-4567",
  page_location: window.location.pathname
});

Create a single GA4 event tag triggered by contact_intent with method-specific parameters.

Reporting on Email Clicks

Once tracking is live, analyze the data.

GA4 Reports

  1. Go to Reports → Engagement → Events
  2. Find email_click
  3. Click to see event parameters
  4. Analyze by email address, page, or other dimensions

Create Custom Explorations

  1. Go to Explore → Free form
  2. Add dimensions: Page path, Email address
  3. Add metrics: Event count, Users
  4. Analyze which pages generate the most email clicks
  1. Go to Goals → Conversions
  2. Find “Email Link Click”
  3. Segment by Campaign, Ad Group, or Keyword
  4. Identify which ads drive email conversions

Common Issues and Fixes

Trigger Not Firing

Double Counting

Missing Email Address in Reports

Click Tracking Blocked

Some browsers or extensions block click tracking. Server-side tracking can help capture more data, but client-side tracking will always miss some events.

Key Takeaway

Email link clicks are high-intent actions that deserve tracking. Setting up mailto click tracking in GTM takes minutes and provides valuable conversion data.

Create a link click trigger targeting mailto: URLs, fire GA4 events and Google Ads conversion tags, and extract the email address for detailed reporting.

Combined with form submissions and phone click tracking, email tracking gives you complete visibility into how visitors want to contact your business. The more conversion signals you capture, the better your campaigns can optimize.

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Adnan Agic

Adnan Agic

Google Ads Strategist & Technical Marketing Expert with 5+ years experience managing $10M+ in ad spend across 100+ accounts.

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