Lead, MQL, and SQL: qualifying interest

Splitting leads into MQLs and SQLs keeps marketing and sales aligned and stops the circular blame of “your leads are weak” versus “you never follow up.” Without shared definitions and CRM SLAs, quality dissolves: marketing celebrates MQL volume while sales ignores the queue and revenue forecasts drift.

Three columns—leads, MQLs, and SQLs, why shared definitions matter, and how CRM SLAs end the “bad lead” blame game—with arrows from contact to opportunity.

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What it is

A lead is a contact who shared data or completed a target action. An MQL (marketing qualified lead) meets marketing criteria for intent, profile, or behavior; an SQL (sales qualified lead) is accepted by sales as ready for active outreach. The MQL→SQL bar must be written down—budget, role, geo, BANT/ICP—whatever both teams agreed in advance.

Why it matters for business

Shared rules cut response-time losses, lift win rates from hand-offs, and truthfully show which channels deliver SQLs, not only top-of-funnel counts. Finance needs the full path measured, not just lead captures.

How to apply it

Document SLAs for first response and next steps in CRM. Use scoring or MQL checklists; train reps to return leads with disqualification reasons. Review sources against SQL share, not only MQL totals; fix creatives and demand gen when SQLs stall.

Table 1. Definition and business context

Criterion	In short
Definition	A lead is a contact who shared data or completed a target action. An MQL (marketing qualified lead) meets marketing criteria for intent, profile, or behavior; an SQL (sales qualified lead) is accepted by sales as ready for active outreach. The MQL→SQL bar must be written down—budget, role, geo, BANT/ICP—whatever both teams agreed in advance.
Why businesses care	Shared rules cut response-time losses, lift win rates from hand-offs, and truthfully show which channels deliver SQLs, not only top-of-funnel counts. Finance needs the full path measured, not just lead captures.
Effect when done right	Crisp qualification improves CAC, revenue predictability, and trust between marketing and sales.

Table 2. Practice, ecosystem, and related terms

Area	What to consider
How to apply	Document SLAs for first response and next steps in CRM. Use scoring or MQL checklists; train reps to return leads with disqualification reasons.
Works with	Links to the funnel, CRM, and demand generation.
In the glossary	Sales funnel in digital marketing, CRM marketing, Demand generation, CAC: customer acquisition cost

Benefits and impact

Crisp qualification improves CAC, revenue predictability, and trust between marketing and sales.

How it fits the stack

Links to the funnel, CRM, and demand generation.