Marketo Forms Attribution Tracking

Capture granular marketing attribution data in every Marketo lead record. AttributionHub works with Marketo's standard forms, MktoForms2 SDK, and iframe embeds — populating hidden fields with UTM data, referrers, and landing pages automatically.

The Attribution Problem in Enterprise Marketing

Marketo is built for enterprise marketing teams managing complex, multi-touch buyer journeys. You've got programs, campaigns, lead scoring models, and revenue attribution reports. But one thing Marketo doesn't do well out of the box is capture first-party UTM data at the individual form level.

Sure, you can use Marketo's own first-touch and multi-touch attribution models. But these rely on Marketo's tracking cookie and program membership. When a prospect visits your site from a specific Google Ads keyword, fills out a form, and becomes a lead, the granular UTM parameter data often doesn't make it into the lead record in a clean, queryable format.

AttributionHub solves this by capturing UTM parameters, referrers, and landing page data at the browser level and writing them directly into Marketo form hidden fields. Every lead record gets populated with the exact marketing context that brought the prospect to your site.

What Data Gets Captured

How It Works

AttributionHub supports all three Marketo form deployment modes: standard DOM forms, the MktoForms2 SDK, and iframe embeds. Each mode is detected and handled automatically.

Step 1: Create Custom Fields in Marketo

In Marketo Admin, go to Field Management and create String-type custom fields for each attribution data point. Set the API Name to match AttributionHub's field names.

Step 2: Add Fields to Your Form

In the Marketo form editor, add your custom fields as hidden fields.

Step 3: Add the AttributionHub Script

Place the script on your website pages where Marketo forms are embedded:

<script src="https://cdn.attributionhub.com/attribution.js?id=YOUR_ID" async defer></script>

For SDK-based forms, AttributionHub uses the official MktoForms2.addHiddenFields() API. For iframe embeds, it appends URL parameters to the iframe source. For standard DOM forms, it populates hidden inputs directly.

Step 4: Test and Validate

Visit your page with UTM parameters and submit the form:

https://yoursite.com/demo?utm_source=google&utm_medium=cpc&utm_campaign=enterprise-demo-q1

Check the lead record in Marketo — the custom fields should be populated with the correct attribution data.

For the complete setup guide, see our Marketo integration documentation.

Use Cases

Enterprise B2B Marketing — Attach precise UTM data to every lead that enters your Marketo database. Use it for lead scoring, segmentation, and closed-loop reporting with Salesforce.

ABM Campaigns — When running account-based campaigns with custom landing pages, attribution tracking tells you exactly which touchpoints drive form fills from target accounts.

Content Marketing — Track which content assets and promotion channels drive the most qualified leads. Compare gated content performance across paid, organic, and social channels.

Multi-Region Teams — Global marketing teams can track which campaigns work best in each region by combining attribution data with existing Marketo lead fields.

What Makes AttributionHub Different

Frequently Asked Questions

Does this replace Marketo's built-in attribution?

No, it complements it. Marketo's program-based attribution tracks engagement with Marketo programs. AttributionHub captures granular UTM and referrer data at the form level, which is a different (and often more actionable) data set.

Will attribution data sync to Salesforce?

Yes. Since attribution values are stored as standard Marketo fields, they sync to Salesforce through Marketo's native CRM sync — no additional integration needed.

Does it work with Marketo landing pages?

Yes. If your Marketo forms are on Marketo landing pages, the AttributionHub script just needs to be included in the page template. It works the same way.

How does it handle known visitors?

AttributionHub captures attribution data on every visit. For returning visitors who are already in your Marketo database, the last-touch fields update while first-touch fields are preserved.