Campaign links: check what survives the redirect

The campaign spreadsheet contains the right UTM values. The published ad opens the right website. The campaign still arrives in reporting under an unexpected name.

The missing check is often the journey between the approved URL and the page the visitor reaches. A click tracker, shortened link, localization rule, or website redirect can modify that journey.

Checking a link means checking its final behavior, not just its spelling in a spreadsheet.

Keep a record of the complete path

Save the approved destination, tracking parameters, placement or creative ID, and the final URL observed in testing. Where a platform wraps the destination, distinguish the tracking URL from the landing-page URL.

Use an approved preview or test route. Avoid repeatedly clicking live ads to diagnose a link, since that can create misleading activity and unnecessary charges.

Test the relevant device and market. A desktop destination may behave differently on mobile, and a regional redirect may take a visitor to a page with different products or terms.

Look for duplicate keys

A common mistake is adding campaign parameters to a URL that already contains them:

https://example.com/offer?utm_source=newsletter&utm_source=partner

There are two source values here. Do not assume every tool will resolve that ambiguity the same way. MDN’s URLSearchParams documentation shows that one parameter name can have multiple values and provides a way to retrieve all of them.

Choose one approved value and remove the duplicate at its source. If a platform template adds parameters, check the combined result instead of testing only the manually entered destination.

The bulk UTM builder and checker can flag parameter and naming problems across a set of links.

Check encoding without damaging the destination

Some tracking links contain another URL as a parameter. That nested value may need encoding according to the platform’s instructions.

Decoding everything until it looks readable is not a repair strategy. It can turn part of a nested URL into parameters belonging to the outer link. Likewise, adding another layer of encoding can change what the destination receives.

Preserve a copy of the supplied link, make the correction in the system that owns it, and test the generated result. Use the ad tag inspector to inspect recognizable URLs and macros without firing a pasted tag. Inspection alone does not establish that the live redirect works.

Verify the promise as well as the parameters

A technically valid redirect can still send visitors to the wrong offer. Check the product, language, region, promotion, and any required code on the final page.

Record whether campaign parameters remain available where the measurement implementation expects them. A missing parameter on the final visible URL deserves investigation, but it does not alone prove that attribution failed; some systems collect information earlier in the journey.

Similarly, seeing a parameter in the address bar does not prove that analytics recorded it. Confirm a permitted test visit in the relevant measurement tools after allowing for processing.

Make the check repeatable

For each failing link, keep the input URL, final destination, test time, device, expected result, and observed result. Redact tokens or personal details before sharing.

After a fix, retest representative links from each template, source, and region. A correction to one manually edited URL may leave the underlying generator unchanged.

Keep the approved link record with the campaign handoff. When a landing page moves or an offer expires, someone should be able to identify every active placement using it without searching old emails.