What are UTMs—and what do they actually tell you?
Turn a campaign link into a useful signal. The four fields to start with, a working example, and the limits worth knowing.
A label on a link, not a tracking system
UTM parameters are labels added to a destination URL. They tell your analytics tool which source, medium, campaign, or creative brought a visitor to your website. They do not collect analytics by themselves: your website still needs an analytics implementation, and consent where required.
For a B2B team, the useful question is not simply “did LinkedIn send traffic?” It is “which launch, placement, or message sent traffic that engaged or completed a lead action?” Consistent UTMs let you separate those efforts.
Start with these four fields
Use utm_source for where the traffic comes from, such as linkedin or newsletter. Use utm_medium for the type of marketing activity, such as social or email. Use utm_campaign for the promotion shared across those placements. Use utm_content to distinguish individual links or creatives.
Google also supports fields such as utm_id and utm_term. You do not need to add every possible field to every link. Start with a small, agreed vocabulary that answers your team’s questions.
https://traceflow.migamo.es/?utm_source=linkedin&utm_medium=social&utm_campaign=traceflow-launch&utm_content=founder-postRead the example as a sentence
This visitor arrived from LinkedIn, through a social placement, as part of the traceflow-launch campaign, using the founder-post link. That is useful context—not proof that this single post caused every later action.
A click alone does not tell you lead quality, revenue, or a person’s complete buying journey. Combine campaign context with engagement and deliberately selected lead events; use your CRM for qualification and sales outcomes.
Check the link before you distribute it
UTM values are case-sensitive: linkedin and LinkedIn can become separate rows. Redirects or shorteners may remove parameters, so test the final destination rather than only the first URL. Never put a name, email address, or other personal information in a campaign URL.
- Choose one spelling for each source and medium.
- Keep campaign names consistent across placements.
- Verify the final URL retains the parameters.
- Confirm analytics receives a test visit when consent is granted.
- Allow time for standard reports to process the visit.
Where Traceflow fits
Traceflow reads campaign data from your connected GA4 property and lets you explore campaign, source, medium, and content together. It does not repair missing tags retroactively or replace your website’s tracking setup. The landing demo uses sample data; your workspace uses your own connected property.
Sources & editorial note
This guide was drafted with AI assistance and checked against the Google documentation below. It is general guidance, not a claim of independently audited campaign results.