What is Marketing Qualified Lead (MQL)?
A Marketing Qualified Lead (MQL) is a lead that has engaged with marketing content or activities to a degree that indicates a higher likelihood of becoming a customer, based on criteria set by the marketing team. It sits earlier in the funnel than a sales qualified lead, which has been further vetted by sales.
TL;DR
A Marketing Qualified Lead is someone whose engagement with marketing content crosses a threshold that suggests they're more likely to become a customer, marking the handoff point where marketing passes them toward sales.
Formula
MQL criteria are typically defined by a lead score threshold or specific behaviors (e.g., downloading a gated asset, attending a webinar, visiting pricing pages multiple times), not a single universal formula.
Why It Matters
Marketing Qualified Lead matters because it is the checkpoint that keeps sales teams from wasting time on unqualified traffic while still catching genuine buying interest early. Without a clear MQL definition, marketing tends to hand off either too many low-intent leads that frustrate sales, or too few, leaving real opportunities sitting unworked in the funnel. Because MQL criteria are set internally rather than standardized across the industry, the metric only becomes useful once sales and marketing agree on what it actually means, and tracking MQL volume against how many eventually convert to paying customers is one of the clearest ways to tell whether that definition is calibrated correctly.
Example
A B2B software company sets its MQL threshold at a lead score of 50, awarded for actions like downloading a whitepaper (worth 10 points) or visiting the pricing page (worth 20 points). A prospect who downloads two whitepapers and visits pricing once accumulates 40 points and is not yet an MQL, but visiting pricing a second time pushes them to 60 points and marketing hands them to sales as an MQL. Because MQL criteria are set internally rather than standardized, the term means something different at every company, which is why sales and marketing need explicit agreement on the definition before using MQL volume as a shared metric.
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