How to Use Sub IDs to Optimize Your Lead Prosper Campaigns

In today’s performance-driven lead generation world, knowing where your leads come from—and which sources actually convert—is no longer optional. Whether you’re generating your own web leads or buying from external vendors, you need granular visibility into the channels, creatives, and landing-page variations that drive results.

That’s exactly where Sub IDs come in.

Sub IDs let you tag each click, web lead, or form submission with detailed source information. This gives you a transparent, data-rich view of your acquisition funnel—allowing you to identify top-performing segments, eliminate wasted spend, and dramatically improve ROI.

And if you’re using Lead Prosper, Sub IDs are already built into your workflow through our default system fields: lp_subid1and lp_subid2.

Let’s break down how to use them.

What Are Sub IDs?

A Sub ID is a tracking parameter appended to a URL or form submission. These parameters let you identify exactly which source, ad, placement, or creative variation produced each individual lead.

Think of Sub IDs as your campaign’s DNA markers:

  • Traffic Source ID
  • Creative or Ad Variation ID
  • Placement or Publisher ID
  • Landing Page Version ID

Example URL:

https://yourlanding.com/?lp_subid1=tiktok_feed&lp_subid2=creative_blue_v3   

Once the lead enters Lead Prosper, those identifiers tell you exactly how that lead was generated.

Why Sub IDs Are Essential for Modern Lead Generation

Today’s performance marketing landscape moves fast. Ads burn out quickly. Traffic sources fluctuate wildly. Publishers vary in quality. Lead buyers want precision.

With Sub IDs, you can:

  • Identify your highest-quality sources

    • Know which channels deliver leads that convert—whether the goal is appointment set, policy sold, funded loan, or enrolled program.
  • Kill low-performing traffic instantly
    • If a source tanks, you see it immediately and shut it off.
  • Optimize landing pages and creatives

    • A/B test headlines, layouts, button styles, and offers—all tied to the Sub IDs passed in.

      Improve buyer satisfaction and acceptance rates

    • When leads are tagged with consistent source data, buyers can segment performance and pay more for what works.
  • Scale confidently
    • Instead of scaling “all traffic,” you scale only the winning combinations.

How Lead Prosper Uses Sub IDs Automatically

Lead Prosper includes two dedicated system fields designed specifically for Sub ID tracking:

lp_subid1 – The Primary Sub ID

Use this for high-level segmentation, such as:

  • Traffic source (Facebook, Taboola, TikTok, Google Search)
  • Publisher
  • Media buyer

lp_subid2 – The Secondary Sub ID

Use this for more granular details, such as:

  • Creative variation
  • Landing-page version
  • Audience segment
  • Keyword group

Lead Prosper recognizes these fields automatically, and they show up in:

  • Lead logs
  • Campaign analytics (including group by visualization)
  • API post logs
  • Buyer deliveries
  • Filters and routing logic
  • Webhooks and exports

This means every lead that flows through your campaigns is instantly ready for deep optimization.

How to Add Sub IDs to Your Web Leads

Here are the easiest ways to implement Sub IDs on your landing pages and traffic sources:

1. Pass them as URL parameters on click

https://yourdomain.com/landing?lp_subid1=google_search&lp_subid2=headline_test_A   

2. Capture Sub IDs in hidden form fields

<input type="hidden" name="lp_subid1" value="google_search"> <input type="hidden" name="lp_subid2" value="headline_test_A">

3. Map them inside your Lead Prosper campaign

If your form or partner POSTs directly to Lead Prosper, simply include:

{ "lp_subid1": "native_taboola", "lp_subid2": "creative_red_v2" }

From that moment forward, every lead enters your pipeline with its data-rich fingerprint.

How Sub IDs Feed Lead Prosper Analytics

Once Sub IDs are flowing, your analytics become powerful.

Group by Sub IDs in your dashboard

See which combinations produce the best:

  • Accept rates
  • Premiums or revenue
  • CPA or CPL
  • Conversion-to-sale
  • Buyer match rates
  • Ping/Post performance

Run deeper comparisons

Split performance by:

  • Device
  • Geo
  • Funnel step
  • Lead disposition
  • Lead buyer

Sub IDs act as the connective tissue between traffic, conversion, and revenue.

Best Practices for Using Sub IDs

To get the most from Sub IDs inside Lead Prosper:

1. Standardize your naming convention

Use clean, consistent naming like

  • facebook_feed
  • google_search_brand
  • creative_blue_v1

2. Keep your hierarchy simple

lp_subid1 = source

lp_subid2 = creative/variation

3. Pass Sub IDs on every lead

Don’t only tag certain campaigns—tag everything.

Incomplete data = incomplete optimization.

Sub IDs Are the New Non-Negotiable

Modern lead generation requires precision.

Sub IDs give you that precision.

Lead Prosper gives you the infrastructure to make it effortless.

By leveraging lp_subid1and lp_subid2consistently, you unlock:

  • Higher lead quality
  • Better buyer performance
  • Stronger profitability
  • Smarter optimization
  • Faster scaling
  • Less wasted ad spend

In 2025 and beyond, Sub IDs aren’t just helpful—they’re the foundation of every successful lead acquisition strategy.

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