How to Add Tracking Links to Your Newsletter (Any Platform)
A platform-agnostic 7-step process for adding UTM tracking links to any newsletter, from Mailchimp to Substack, without breaking attribution.
Marcus Webb
Growth Marketing Lead
Email Marketing Tracking Blueprint Guide
What does your email platform already track?
Most email platforms, Mailchimp, Klaviyo, ConvertKit, Substack, already track opens and clicks inside their own dashboard, but that data stops at the click. It doesn't show whether a subscriber browsed your site afterward or converted. UTM parameters close that gap by carrying source, medium, and campaign context into your website analytics platform, so a click in your inbox becomes a traceable session in GA4 or wherever you measure downstream behavior.
How do you set a consistent utm_source and utm_medium for email?
Before tagging a single link, lock in the utm_source and utm_medium values you'll use on every newsletter send. A common, sensible pair is utm_source=newsletter (or a list-specific identifier if you run multiple lists) with utm_medium=email, applied identically across every campaign so your reports never fragment a single channel into inconsistent variants.
How should you name utm_campaign for each send?
Each individual send needs its own utm_campaign value that identifies that specific email, something like weekly_digest_july21_2026 for a recurring newsletter, or a descriptive, promotion-specific name for a one-off send. Build the full tagged URL before you touch the email editor, using a UTM builder or shared spreadsheet template, rather than tagging links ad hoc inside the platform, which is where copy-paste errors creep in.
How do you track multiple links inside the same email?
A typical newsletter has more than one clickable link, a main call-to-action button, a secondary text link, and links inside individual article summaries. Use utm_content to distinguish each one, even when several links point to the same destination, so you can see afterward exactly which placement inside the email actually drove engagement rather than lumping every click together under one campaign total.
Should you use your platform's built-in UTM auto-tagging?
Many platforms, including Mailchimp, offer built-in auto-tagging that appends UTM parameters to every link in a campaign automatically. This reduces manual effort and copy-paste risk, but review the auto-generated tags carefully, platform defaults often don't match your team's naming convention, and a generic auto-tag pattern can fragment your data just as badly as no tagging at all.
Why send a test email before the real one?
Send a test version to yourself or a colleague and click through every single link before it goes to your full list. This catches broken links, missing parameters, and copy-paste errors before they reach subscribers, and, more importantly, before they corrupt your actual campaign's tracking data in a way that's much harder to fix after the fact.
How do you confirm tracking is actually working?
After sending, check your analytics platform's real-time report to confirm clicks are attributing correctly to the expected source, medium, and campaign. Catching a misconfiguration while the campaign is still active lets you fix it immediately, instead of discovering days later, during a scheduled report review, that the expected data simply isn't there.
What platform-specific quirks should you watch for?
Some email platforms strip or modify query parameters under certain conditions, particularly around their own internal click-tracking redirects, which can interfere with UTM parameters if not configured carefully. If you notice unexpected data loss specifically on email traffic, check whether your specific platform has documented compatibility issues with UTM tagging, this is a well-known quirk for a handful of less common tools.
How do you make tracking part of your standard send process?
Once you've run through this process a few times, fold it into your standard, repeatable checklist for every newsletter send rather than treating it as a special task reserved for big campaigns. Consistent application across every single send is what makes your email channel's data genuinely trustworthy over time, revealing real patterns in what content and calls-to-action resonate with your specific subscriber base.
Frequently Asked Questions
Do I need different UTM tags for Mailchimp versus Substack?
No. The utm_source, utm_medium, and utm_campaign logic stays platform-agnostic, only the mechanics of pasting or auto-generating tagged links inside the editor differ between tools.
What utm_medium should I use for newsletter links?
utm_medium=email is the standard choice, kept consistent across every newsletter send so all your email traffic rolls up under one comparable channel in your analytics platform.
Should I tag every link in my newsletter, including the footer?
Yes, tag every outbound link with a distinct utm_content value, including footer and social links, so you can see which placements actually drive clicks instead of assuming the main CTA is the only one that matters.
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