A UTM parameter is a standardized tag appended to the end of a link's URL that tells an analytics platform like Google Analytics exactly which campaign, source, and medium drove a given website visit, rather than that visit showing up as generic, unattributed traffic.
A simple answer to what is a UTM parameter worth remembering: it’s a small piece of tracking text riding along in the URL, invisible to the person clicking but fully readable by analytics tools on the other end.
Five Specific Tags, Not One
A UTM parameter isn’t a single tag, it’s a set of five possible UTM parameter types that combine to answer different questions about where traffic came from:
- utm_source — where the traffic originated, “klaviyo,” “newsletter,” “facebook.”
- utm_medium — the general channel type, “email,” “social,” “cpc.”
- utm_campaign — the specific campaign name, “bfcm-2026,” “welcome-series.”
- utm_term — historically used for paid search keywords, less common in email context.
- utm_content — distinguishes between multiple links or variations within the same campaign, useful for A/B testing which link placement performs better.
How This Differs From Link Tracking Generally
UTM parameters are a specific, standardized subset of the broader link tracking concept covered elsewhere in this glossary. Link tracking within an email platform tracks clicks internally, which link, which subscriber, and can work entirely without UTM parameters attached. UTM parameters specifically exist to carry that context externally, into Google Analytics or another web analytics tool, once the click leaves the email and lands on the website, which is why both mechanisms often run simultaneously on the same link without conflicting.
UTM Parameter Examples
A cart abandonment email’s product link might carry utm_source=email&utm_medium=email&utm_campaign=abandoned-cart&utm_content=main-cta, letting an analytics team later filter website traffic and confirm exactly how many sessions, and how much revenue, traced back specifically to that automation rather than showing up as unexplained direct traffic.
UTM Parameter Best Practices
Keeping naming conventions consistent across every campaign, always lowercase, always the same term for the same channel, matters more than it might seem, since “Email” and “email” get treated as two separate values in most analytics platforms, splitting data that should have been combined into one clean view.
Related terms:
Adflipr’s campaign links can carry UTM parameters alongside internal click tracking, giving stores visibility both inside the platform and inside their broader analytics setup.
