Lead Decay
Lead decay is the steady decline in a lead's likelihood to convert as time passes without engagement. It quantifies how quickly buying intent fades.
In depth
Lead decay is typically modeled as a curve where conversion probability drops sharply in the first hours and days, then flattens into a long, low tail. The shape is driven by buyer psychology: research intent is highest right after a trigger event like completing a scorecard, and every passing hour invites competitors, distractions, and shifting priorities. Understanding the steepness of your own decay curve tells you exactly how aggressive your follow-up cadence needs to be to capture value before it evaporates.
The common pitfall is averaging decay across all leads and missing that high-intent and low-intent segments decay at very different speeds. In a quiz-funnel workflow, the score tier itself is a decay signal: a 'Hot Lead' decays fast and rewards immediate human follow-up, while a 'Warm Lead' may benefit more from a nurturing sequence. Mapping decay rates per tier lets you allocate scarce sales time to the leads where the marginal hour of speed creates the most pipeline.
Example in practice
Frequently asked questions
What causes lead decay?
Decay is caused by fading buyer intent, competitor outreach, and changing priorities as time passes without contact. The longer a lead waits, the more these forces erode its likelihood to convert.
How fast does a typical lead decay?
Decay is steepest in the first hours and days, especially for high-intent quiz respondents whose conversion odds can halve within a day. The exact rate depends on your audience and product, so you should measure your own curve.
Can lead decay be reversed?
A decayed lead can sometimes be re-engaged through a relevant re-activation campaign or a new trigger event like retaking a quiz. However, prevention through fast follow-up is far more reliable than trying to revive cold leads.