The short answer
Respond to an inbound B2B lead within five minutes where possible, and always inside the first hour. Conversion falls sharply after the first hour and again after the first day, because buyers contact several vendors at once and the first credible reply sets the agenda. Hitting that consistently is a routing and ownership problem, not an effort problem.
Why the first hour decides the deal
A buyer who fills in a form has just finished comparing options. They are in evaluation mode for a short window, and they usually contacted more than one vendor. The first substantive reply frames the requirement — every later reply argues against that frame.
This is why response time outperforms almost every copy or creative change you can make. You are not persuading harder; you are arriving first.
Realistic benchmarks
Targets that hold up across B2B services and considered-purchase D2C:
- 1Under 5 minutes — best case for high-intent demo and pricing requests.
- 2Under 1 hour — the working standard for all inbound during business hours.
- 3Under 12 hours — the absolute floor, including overnight and weekend arrivals.
- 4100% acknowledgement — every lead gets a human-signed reply, even if the answer is 'we will come back tomorrow with specifics'.
The routing setup that makes it repeatable
Teams rarely miss response times because people are lazy. They miss them because ownership is ambiguous and the lead lands in a shared inbox nobody feels accountable for.
- Assign every form and every source to one named owner, with a backup.
- Send an instant acknowledgement that sets an expectation and asks one qualifying question.
- Escalate automatically when a lead is untouched after 30 minutes.
- Review a weekly report of first-response time by source, not an average across everything.
Where automation fits
An automated acknowledgement buys time and sets expectations, but it does not count as a response — the clock stops when a person sends something specific to that enquiry. This is exactly the gap ARIA, our AI Sales PA, is built to close: she reads every inbound lead, acknowledges it instantly, asks the qualifying question and routes the ones worth a human conversation, so no lead you paid for goes cold overnight.
What to measure
Track median first-response time rather than the mean — one four-day reply distorts an average and hides an otherwise healthy process. Pair it with the share of leads never contacted at all, which is usually the more shocking number.
| Metric | What it shows | Healthy target |
|---|---|---|
| Median first-response time | Typical lead experience, not the average | Under 1 hour in business hours |
| Share of leads never contacted | Leads that went cold by default | 0% |
Frequently asked
Is an automated reply enough?
It buys time and sets expectations, but it does not count as a response. The clock stops when a person sends something specific to that enquiry.
What about leads that arrive overnight?
Acknowledge automatically, then reply first thing. The comparison set is usually still open the next morning; by day three it rarely is.
Does speed matter for low-intent leads too?
Less, but it still helps. Route low-intent leads to nurture rather than burning sales time, and keep the fast lane for demo, pricing and contact requests.
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