What is Product-Qualified Lead (PQL)?
Definition: A user or account that has demonstrated purchase readiness through product usage behavior, such as hitting usage limits, activating key features, or matching an ideal usage profile.
A PQL is a lead that qualified themselves through product behavior. They signed up for the free tier, used the core features, hit meaningful milestones, and their usage pattern matches accounts that historically convert to paid. It's the opposite of an MQL (marketing-qualified lead), which is based on content engagement, not product usage.
Classic PQL signals: user hit their free tier limits, invited 3+ team members, activated an advanced feature, logged in 10+ times in a week, or exported data (indicating they're building a workflow around your product). Each product defines its own PQL criteria based on which behaviors correlate with conversion.
For GTM Engineers, PQLs are the highest-converting outreach targets. The prospect already uses your product and likes it enough to keep coming back. Your job is to detect the PQL signal, enrich the contact with company data, route them to the right AE, and provide context about what they've done in the product.
Building a PQL system requires product analytics (PostHog, Segment, Mixpanel), a scoring model (which behaviors predict conversion?), and a trigger mechanism (when the score crosses a threshold, create a CRM opportunity and notify the AE). This is a natural fit for n8n or Make workflows that listen for product events and orchestrate the downstream actions.