What are UTM parameters and how do you use them for campaign tracking?

UTM parameters are tags appended to a URL that tell Analytics where a visitor came from. Without them, traffic from an email or a social post often lands in Direct or an unhelpful referral bucket.

The five parameters:

• utm_source (required) — the specific origin: newsletter, linkedin, google.
• utm_medium (required) — the channel type: email, cpc, social, referral. This is what drives channel grouping, so consistency here matters most.
• utm_campaign — the campaign name: diwali_sale_2026.
• utm_term — the keyword, mainly for manually tagged paid search.
• utm_content — to distinguish variants, such as two buttons in the same email.

The rules that make or break it:

• Agree a naming convention and document it. Facebook, facebook, and FB become three separate sources, fragmenting every report. Values are case-sensitive.
• Use standard medium values, or traffic falls into "Unassigned" instead of the right channel group.
• Never tag internal links. Tagging a link between your own pages starts a new session and destroys the original attribution — a genuinely common and damaging mistake.
• Do not manually tag Google Ads; use auto-tagging with the gclid instead, which carries far more detail.

Note: Keep a shared UTM builder spreadsheet so everyone generates links the same way. It is unglamorous and it is what makes campaign reporting usable.