The Types of Leads, Explained

Two different things, both called lead types

Half the confusion in this topic comes from mixing two unrelated classification systems. One describes how engaged a lead is. The other describes where it sits in a qualification process. They are frequently used in the same sentence as if they were the same axis.

Temperature is a useful shorthand in conversation and useless in a system, because nobody can define the boundary between warm and hot. Qualification stages are the ones that belong in your CRM — provided each has a written entry condition.

The temperature labels

• Cold — no prior relationship or engagement. They have not heard of you. Everything in a standard outbound list is cold.
• Warm — some engagement exists: they downloaded something, attended a webinar, visited repeatedly, or came via a referral. They know who you are.
• Hot — active buying behaviour. Pricing page visits, demo requests, competitor comparisons, or a direct enquiry.

Useful for a conversation about prioritisation. Do not build routing or reporting on them — the moment two people have to agree whether a specific lead is warm or hot, the labels stop working.

The qualification stages

1. 01
   Lead

   A known contact record. Someone whose details you hold. No claim is being made about fit or intent — this is simply the entry state.

2. 02
   MQL — marketing qualified lead

   Meets marketing's agreed criteria for handing to sales. The one that causes the most conflict, because it is frequently defined by engagement alone rather than by fit and intent together.

3. 03
   SAL — sales accepted lead

   Sales has looked at it and agreed it is worth working. The most useful underused stage in B2B, because it converts 'sales says the leads are bad' from an opinion into a measurable rejection rate with reasons.

4. 04
   SQL — sales qualified lead

   Sales has spoken to them and confirmed a real opportunity exists — budget, authority, need, and timing are understood well enough to invest cycles.

5. 05
   PQL — product qualified lead

   A user of a free tier or trial whose usage indicates readiness to buy. Behaves differently from every other type on this list and needs its own model.

Why PQLs are genuinely different

Every other lead type is a proxy: you are inferring interest from behaviour that is adjacent to buying. A PQL is not a proxy. The person is using the product, and usage is direct evidence of value received.

That changes the mechanics in ways that matter operationally:

Scoring PQLs with the same model as MQLs is a common and expensive mistake. A user who hit a plan limit yesterday and a contact who downloaded two ebooks are not comparable, and averaging them into one score buries the signal that actually predicts revenue.

The model that replaces most of this

The taxonomy exists because companies needed language for 'this lead is worth working'. A two-axis model expresses the same thing more precisely and is directly implementable.

• Fit — does this account match the ICP? Firmographic, technographic, and segment criteria. Objective and machine-checkable.
• Intent — has this account demonstrated a buying window? Behaviour, engagement depth, product usage, and trigger events. Also machine-checkable if instrumented.

Reading that grid resolves most arguments about lead quality on the spot. High fit with no intent routed to sales is the single most common cause of a sales team learning to ignore marketing's leads. Low fit with high intent looks exciting in a dashboard and converts at close to zero.

Making the labels actually work

1. 01
   Write one entry condition per stage

   Objective, checkable by someone who was not involved. If the criterion is a feeling, it is not a criterion.

2. 02
   Get both functions to sign it

   Marketing and sales, on the same document. This is the cheapest high-value hour available to most B2B companies.

3. 03
   Enforce it in the system

   Stage transitions driven by conditions rather than opinion. A label anyone can set by hand will drift within a quarter.

4. 04
   Require a reason on rejection

   Every SAL rejection carries a reason from a fixed list. Within a month you know whether the problem is fit, intent, timing, or follow-through.

5. 05
   Review the rejection reasons monthly

   The patterns tell you what to fix. This is the most valuable ten minutes in the marketing and sales meeting.

For how to score against these axes, see lead quality. For where lead types sit in the wider process, the B2B lead generation playbook covers the full sequence.