UTM parameters

The labels on the end of a link, and what each one answers

A tagged link looks like your normal address with a question mark and a few phrases stuck on the end. The page loads exactly as it always did. The extra text is not for the visitor at all, it is a note to your own analytics.

Three labels do the heavy lifting. Source answers where the click came from, like your newsletter or your business profile. Medium answers what kind of channel that was, like email or social or print. Campaign answers which push it belonged to, like the spring maintenance reminder you sent in March. Two more labels exist for splitting out paid keywords and for telling two versions of the same link apart, and most local businesses never need either one.

The wording is yours to invent, and that is the trap. Analytics treats email, Email, and e-mail as three separate sources and will happily report them in three separate rows. Whatever spelling you pick the first time is the spelling you are stuck with, so write your choices down somewhere boring and reuse them forever.

Why it matters when the phone rings

Most local owners can describe their traffic in broad strokes and almost nothing past that. People find them on Google, probably. Somebody saw the truck. Tagged links turn that shrug into a list.

The practical use is anything you put out by hand. The link in your monthly email. The link in a post on your business profile. The link behind a QR code on a flyer. The link a supplier drops into their partner directory. Untagged, all of it lands in one vague pile labeled direct or referral. Tagged, you can see that the postcard run brought forty visits and two form fills, as a worked example, while the directory listing brought a steady trickle that never asked for anything. Anything a customer types in by hand arrives with no labels at all, which is why print work usually rides behind a short link or a scannable code instead of a long address.

One caution that catches people out: never tag links between pages of your own site. Doing that restarts the visit and overwrites the original source, so a lead that genuinely came from a search ends up credited to your own footer button. Tagging is only ever for links that live somewhere other than your site.

Knowing which channel actually produced the call is the whole point, and it is why tagging sits inside how we approach lead generation rather than off in a reporting corner.

How it connects to the rest of your measurement

The labels mean nothing until something reads them, which is the job of GA4 or whichever analytics your site runs. Google Ads tags its own clicks automatically, so hand-tagging ad links usually duplicates that work and occasionally breaks it. And a tagged link only ever tells you about one touch, the click it was attached to: it is a useful input to attribution, not the finished answer about what earned the customer.