PQLs vs MQLs

A marketing-qualified lead (MQL) is someone who looked interested - downloaded the guide, hit the pricing page, filled the form, scored enough points in the marketing automation to get passed to sales. A product-qualified lead (PQL) is someone who has actually used the product and shown intent through behaviour - hit a usage limit, invited their team, used the feature that correlates with paying.

The difference matters because one is a statement of interest and the other is a demonstration of value received. An MQL says “I might want this.” A PQL says “I’ve experienced this working and I want more of it.” The second is a far stronger signal, and in any product with a self-serve trial or freemium tier it’s the signal you should be acting on.

Why MQL scoring breaks in product-led funnels

Classic lead scoring was built for a world where the product sat behind a sales gate, so the only signals available were marketing-site behaviours and form data. Job title, company size, pages viewed, content downloaded. You scored intent from the outside because you couldn’t see inside the product.

Once there’s a free trial or freemium tier, that whole apparatus is measuring the wrong thing. You no longer have to infer intent from a whitepaper download - you can watch the person use the product. Someone who downloaded an ebook and someone who set up the integration and invited four colleagues are not the same lead, and an MQL model that scores them similarly is throwing away the best data you have.

This is the same shift the activation magic number is built on: in-product behaviour predicts revenue better than demographic or marketing-touch data, so route on behaviour.

What makes a good PQL signal

The useful PQL trigger is the behaviour that actually correlates with converting and retaining, found the same way the activation metric is - by looking at what paying, retained customers did early that churned trials didn’t. Common shapes:

• Hitting a usage limit on the free tier. The wall is doing the qualifying for you.
• Multi-player actions - inviting teammates, sharing a workspace. Team adoption is a strong buying signal because it means the product is becoming embedded.
• Using a core-value feature, not a peripheral one. The action that maps to the job the customer hired the product for.

The PQL then routes either to a self-serve upgrade prompt or, above a deal-size threshold, to a sales rep who reaches out knowing exactly what the user has already done.

Where it goes wrong

• Scoring activity, not value. Logins and clicks are activity. A PQL needs to be behaviour tied to the value the customer came for, or it’s just MQL theatre with product data.
• Sending PQLs to sales too early. A user mid-trial who’s still exploring doesn’t want a call. Reaching out the moment they hit value, not the moment they sign up, is the whole skill.
• Keeping the MQL machine running alongside, untouched. Once you have PQLs, most of the old marketing-qualified scoring is noise. Teams keep both because the old one is wired into the CRM, and reps drown in low-signal MQLs while the PQLs wait.