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2026-02-05

Advanced Lead Scoring with Machine Learning and HubSpot

By Trunk Tech Solutions
#HubSpot#AI#Machine Learning#Lead Scoring

Advanced Lead Scoring with ML

A B2B enterprise was overwhelmed by lead volume. Their standard HubSpot lead scoring was too simplistic, leading to sales reps wasting time on low-quality prospects while high-value targets went cold.

The Challenge

  • Data Fragmentation: Behavioral data was spread across HubSpot, Segment, and their product database.
  • Non-Linear Scoring: Simple point-based systems couldn't capture the complex patterns of a high-intent buyer.
  • Actionability: The score needed to be visible and actionable within the HubSpot CRM UI.

The Solution

We engineered a data pipeline that feeds HubSpot data into a custom Machine Learning model.

  1. Data Warehouse Integration: Synced HubSpot data to BigQuery for model training.
  2. Predictive API: Built a Python-based microservice that generates a "Propensity to Buy" score for every new lead.
  3. CRM Cards: Created a custom CRM extension that shows the ML score and the "Top 3 Reasons" for that score directly on the contact record.

The Result

  • 25% Increase in Conversion: Sales reps focused on the top 10% of leads.
  • Reduced CAC: Marketing spend was optimized towards channels producing high-scoring leads.
  • Better Alignment: Marketing and Sales now agree on what constitutes a "Sales Ready" lead.

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