Guide to use UTM parameters in email marketing

by Teno Mail

0 comment

Tracking performance is the backbone of effective email marketing. Metrics like open rate and click-through rate give you surface-level insights—but they don’t tell you what happens after someone clicks your email.

This is where UTM parameters become essential.

UTM parameters allow you to connect your email campaigns directly to your website analytics, giving you a clear picture of user behavior after the click. Instead of guessing whether your emails are driving traffic, conversions, or revenue, you can measure it with precision.

Without proper tracking, email traffic is often misclassified or grouped into vague categories like “direct” or “referral,” making it difficult to evaluate performance accurately.

By using UTM parameters consistently, marketers can move beyond assumptions and make data-driven decisions that improve campaign performance, audience targeting, and overall ROI.

What are UTM parameters

UTM parameters (short for Urchin Tracking Module) are small pieces of text added to the end of a URL to track where your website traffic is coming from.

A typical URL with UTM parameters looks like this:

https://yourwebsite.com/product

https://yourwebsite.com/product?utm_source=newsletter&utm_medium=email&utm_campaign=april_launch

Each parameter provides specific information about the click. When a user clicks this link, the data is automatically sent to analytics tools like Google Analytics, allowing you to identify:

Which email or campaign drove the visit
What channel the user came from
Which specific link or content they clicked

UTM parameters act like tracking labels attached to your links. They tell your analytics platform exactly how a visitor arrived on your website and which marketing effort influenced that visit.

These parameters were originally developed by Urchin, a web analytics company later acquired by Google, and they remain a standard tracking method used across digital marketing today.

Importance of UTM in email marketing

UTM parameters play a critical role in making email marketing measurable, scalable, and optimized. Without them, you’re essentially operating without visibility into what’s working.

Accurate campaign tracking

UTMs ensure that every click from your email is correctly attributed. Instead of traffic being misclassified, you can clearly see which email, campaign, or segment generated the visit.

Measure real performance beyond clicks

Email metrics alone don’t show the full story. UTM tracking helps you understand what happens after the click—such as conversions, purchases, or time spent on your site.

Compare campaigns and channels

With consistent UTM tagging, you can compare the performance of different campaigns, newsletters, or even channels like email vs. social media. This enables smarter budget allocation and strategy decisions.

Using Teno Mail for campaigns!

Optimize future campaigns

By analyzing UTM data, you can identify which subject lines, CTAs, or email designs drive the best results. This allows you to refine your campaigns over time for better engagement and conversions.

Eliminate guesswork

Without UTMs, marketing decisions are often based on assumptions. UTM parameters turn that guesswork into actionable data, helping you understand exactly what is driving results and what isn’t.

Commonly used UTM parameters

UTM parameters are made up of specific tags that you add to your URLs. Each tag serves a unique purpose, and when used together, they give you a complete view of how your email campaigns perform.

Understanding these parameters properly is important—because incorrect or inconsistent usage can lead to messy, unreliable data.

utm_source:

The utm_source parameter identifies where the traffic is coming from.

In email marketing, this typically refers to the platform, tool, or list that sent the email. It answers the question: “Which source drove this visitor?”

Examples:

utm_source=newsletter
utm_source=welcome-series
utm_source=customer-list
utm_source=crm

Best practice:
Keep this value consistent across campaigns. For example, if you use “newsletter” once, don’t switch to “email-newsletter” later, as it will split your data into multiple sources.

utm_medium:

The utm_medium parameter defines the marketing channel used to deliver the traffic.

For email campaigns, this is almost always set to:

utm_medium=email

This helps analytics tools group your traffic correctly under the email channel, making reporting more accurate and easier to interpret.

Examples:

utm_medium=email
utm_medium=drip-email
utm_medium=transactional-email

Best practice:
Stick with a standard value like email unless you have a very specific reason to differentiate.

utm_campaign:

The utm_campaign parameter tracks the specific campaign name.

This is one of the most important parameters because it allows you to group and analyze performance at the campaign level.

Examples:

utm_campaign=spring_sale
utm_campaign=product_launch_may
utm_campaign=black_friday_2026
utm_campaign=weekly_newsletter

Best practice:
Use clear, descriptive, and consistent naming conventions. Avoid vague names like “campaign1” or “test,” as they won’t be helpful later when analyzing performance.

utm_content:

The utm_content parameter is used to differentiate between multiple links within the same email.

If your email contains several CTAs or links pointing to the same page, this parameter helps you understand which one was clicked.

Examples:

utm_content=header_button
utm_content=footer_link
utm_content=main_cta
utm_content=image_banner

Use cases:

Comparing button vs. text link performance
Tracking different sections of an email
Running A/B tests on CTAs

Best practice:
Use this parameter strategically when you need deeper insights, not for every single link unnecessarily.

utm_term:

The utm_term parameter is traditionally used for tracking keywords in paid search campaigns, but it can also be adapted for email marketing in specific cases.

In email campaigns, it can help you track audience segments or targeting criteria.

Examples:

utm_term=vip_customers
utm_term=inactive_users
utm_term=trial_users

Best practice:
Use this parameter only when it adds meaningful segmentation data. It’s optional and not always required for email campaigns.

How to use UTM parameters

When working with email platforms, you have two main ways to implement UTM tracking: automatic tracking or manual URL building. Choosing the right approach depends on your workflow, level of control, and campaign complexity.

The easy way: automatic UTM tracking

The simplest way to use UTM parameters is by enabling automatic tracking within your email platform.

When this feature is turned on, the system automatically appends UTM parameters to every link in your email. This ensures:

Consistent tracking across all campaigns
No manual errors in tagging
Faster campaign setup

Typically, automatic tracking will:

Set utm_medium=email by default
Use your campaign name as utm_campaign
Assign a predefined value for utm_source

Why this is useful:

Saves time, especially for frequent campaigns
Reduces the risk of broken or inconsistent URLs
Ideal for beginners or teams managing multiple emails

Limitation:
You have less control over how each individual link is tagged. If you need granular tracking (like distinguishing between multiple CTAs), automatic tracking alone may not be enough.

The custom way: build your own UTM URLs

For more control and flexibility, you can manually create UTM-tagged URLs and use them in your emails.

This involves adding parameters directly to your links before inserting them into your email content.

Example:

https://example.com/pricing?utm_source=newsletter&utm_medium=email&utm_campaign=may_offer&utm_content=cta_button

Benefits of custom UTM URLs:

Full control over every parameter
Ability to track specific links and placements
Better insights into user behavior within the email

When to use this approach:

Running A/B tests
Tracking multiple CTAs in a single email
Segmenting audiences more precisely
Analyzing detailed engagement patterns

Best practices:

Use a consistent naming convention
Avoid typos and formatting inconsistencies
Keep URLs clean and readable
Document your UTM structure for team-wide use

Things to keep in mind

Using UTM parameters effectively is not just about adding tags to your URLs—it’s about maintaining clean, consistent, and reliable data over time. Small mistakes can quickly lead to confusing reports and inaccurate insights. Here are the key principles you should follow:

Be consistent:

Consistency is the foundation of accurate tracking.

If you use different naming variations for the same source, medium, or campaign, your analytics tool will treat them as separate entries. For example:

utm_source=newsletter
utm_source=Newsletter
utm_source=email-newsletter

All three will appear as different sources, even though they represent the same thing.

What to do:

Create a clear naming convention before you start
Stick to lowercase formatting
Document your UTM structure for your team

Consistency ensures your reports stay clean, organized, and easy to analyze.

Avoid spaces:

Spaces in URLs can break links or get converted into confusing characters like %20, making your data harder to read and manage.

Instead of this:

utm_campaign=summer sale

Use this:

utm_campaign=summer_sale
utm_campaign=summer-sale

Best practice:
Use underscores (_) or hyphens (-) to separate words. This keeps your URLs clean, readable, and compatible across platforms.

Keep campaign names the same over time:

Changing campaign naming formats frequently can make long-term analysis difficult.

For example, if you run a weekly newsletter:

Week 1: utm_campaign=newsletter_may_week1
Week 2: utm_campaign=may_newsletter_wk2

These inconsistencies make it harder to group and compare campaign performance.

What to do instead:

Use a standardized format like:
utm_campaign=newsletter_2026_05_week1
Maintain the same structure across all campaigns

This allows you to track trends, compare results over time, and generate more meaningful insights.

Test your links first:

One of the most overlooked steps is testing UTM-tagged links before sending your email.

A small error—like a missing “?” or “&”—can break the link or prevent tracking from working properly.

Before launching your campaign:

Click every link in your email
Check that the page loads correctly
Verify that UTM parameters appear in the URL
Confirm tracking is recorded in your analytics tool

Testing ensures that your data is accurate and that users have a smooth experience.

Conclusion

UTM parameters are a simple yet powerful tool that transforms email marketing into a measurable, data-driven channel. Instead of relying only on basic metrics like opens and clicks, you gain full visibility into what happens after users interact with your emails.

By understanding how UTM parameters work, applying them correctly, and following best practices like consistent naming and proper testing, you can unlock deeper insights into your campaigns. This allows you to identify what drives engagement, optimize your messaging, and improve conversions over time.

Whether you choose automatic tracking for convenience or custom UTM URLs for greater control, the key is to use them strategically and consistently. When done right, UTM tracking doesn’t just measure performance—it helps you make smarter marketing decisions and achieve better results from every email you send.