Affilio now preserves UTM and other tracking parameters end-to-end. Every click your campaigns generate can be traced back to its exact source, medium, and campaign — no more attribution gaps.

Traffic attribution has always been the weak point of affiliate links.

You invest in a paid campaign, an email sequence, or a carefully crafted social post — and attach your affiliate link. But the moment a user clicks through, most of the UTM context you carefully set up quietly disappears. The destination gets the visitor. You lose the insight.

That ends today. Affilio now preserves UTM parameters and all other query-string tracking parameters end-to-end, so your campaign data arrives intact wherever your audience lands.

The Problem: Affiliate Links Break UTM Chains

UTM parameters (utm_source, utm_medium, utm_campaign, utm_term, utm_content) are the backbone of traffic attribution. They tell your analytics platform exactly where a visitor came from and what drove them to click.

When you add UTM parameters to a link, they travel with the user — until they hit a redirect.

Most affiliate links involve at least one redirect. Merchants, affiliate networks, and link shorteners all typically strip or ignore query parameters during the forwarding step. The result:

Your Google Analytics shows direct traffic instead of your campaign
Your email platform sees zero click-through attribution
Your paid ads dashboard can't close the loop on conversions
A/B test results become unreliable because the variant data is lost

This is not a niche problem. Any creator or marketer relying on UTMs to measure ROI across their affiliate content has been flying partially blind.

What Affilio Now Does Differently

Affilio's link resolution pipeline has been updated to detect, carry, and forward all tracking parameters — not just UTMs — through the full link journey.

Here is what happens when a visitor clicks an Affilio link that includes tracking parameters:

1. Parameter capture — Affilio reads all query parameters appended to the incoming link, including standard UTMs, custom campaign keys, referral tokens, and any other parameters your analytics stack relies on.

2. Parameter forwarding — When the user is presented with the destination page or redirected onward, those parameters are forwarded to the final URL. The merchant or destination domain receives them intact.

3. Pass-through to your analytics — Because the UTM values survive the redirect, your analytics platform (Google Analytics, Plausible, Mixpanel, or any standard tool) correctly attributes the visit to the originating campaign.

No configuration required. If the parameter is on the incoming URL, Affilio preserves it.

What Parameters Are Preserved

The forwarding logic is intentionally broad. Affilio preserves:

Standard UTM parameters: utm_source, utm_medium, utm_campaign, utm_term, utm_content
Custom attribution keys: Any non-standard query parameter your team or platform uses (e.g. ref, cid, gclid, fbclid, msclkid)
Referral and partner tokens: Tracking parameters added by affiliate networks, CRM tools, or partner platforms
A/B test and segment identifiers: Keys passed by testing platforms to identify variants or user segments

The system does not attempt to interpret or filter parameters. What arrives on the Affilio link is forwarded to the destination.

Why This Matters for Campaign Measurement

Consider a typical affiliate workflow without parameter preservation:

> You run a paid Instagram ad → user clicks → Affilio link resolves → parameters are stripped → merchant receives anonymous traffic

Your analytics reports a sale but cannot tie it back to Instagram, to that specific ad set, or to the creative variant. The loop is broken.

With Affilio's parameter preservation:

> You run a paid Instagram ad → user clicks → Affilio link resolves → parameters are forwarded → merchant receives attributed traffic

Now your analytics platform closes the loop. The sale is attributed to Instagram, the correct campaign, and the correct ad variant. Cost-per-acquisition calculations become accurate. Scaling decisions become defensible.

Real-World Attribution Scenarios

Email marketing: You send a campaign with utm_source=newsletter&utm_medium=email&utm_campaign=spring_sale. Clicks through Affilio links carry those values to the destination page. Your email platform and analytics see the full picture.

Paid search: Google auto-tags clicks with gclid. Previously that parameter was lost at the affiliate redirect. Now it travels through — allowing Google Ads to register the conversion and optimize bidding accordingly.

Influencer partnerships: You issue unique referral codes or ref=influencer_name parameters per partner. Affilio forwards them intact, so you can accurately compare which partner drove which volume without building a separate tracking infrastructure.

Multi-channel A/B testing: You test two creative variants using utm_content=variant_a and utm_content=variant_b. Results are now measurable down to the individual variant — not lumped into unattributed traffic.

How to Use It

No changes to your workflow are required for existing links.

If your Affilio links already include UTM parameters — either appended manually or auto-inserted by your email, ad, or CRM platform — those parameters will be forwarded automatically starting from today.

For new links, simply append your UTM parameters as you normally would:

https://affilio.link/yourlink?utm_source=newsletter&utm_medium=email&utm_campaign=spring_sale

Affilio handles the rest.

The Bigger Picture

Affiliate marketing is a performance channel. Performance channels live or die on measurability.

UTM preservation closes the attribution gap that has silently undermined campaign analysis across the affiliate industry. Combined with Affilio's existing capabilities — branded links, deep linking, and multi-marketplace support — you now have a complete infrastructure for traffic that is not only directed and converted, but fully traceable from first click to final conversion.

Because traffic you can't measure is traffic you can't optimize.

UTM Parameters Now Travel With Your Affilio Links — Full Traffic Attribution, Zero Data Loss