The faster a company responds to an enquiry, the more likely it is to turn into a real sales conversation. According to research published by Harvard Business Review, companies that responded within an hour were nearly seven times as likely to qualify the lead as those that tried later. With automation, response time can be cut to minutes, even outside business hours.
What the research shows: reply within the hour for nearly 7× the odds
A 2011 Harvard Business Review article analysed how more than two thousand US companies responded to online leads. The key findings: companies that responded within an hour were nearly seven times as likely to reach a meaningful conversation with a decision-maker as those that tried an hour later, and more than sixty times as likely as companies that waited 24 hours or longer. Meanwhile, the average response time was 42 hours.
Why the gap is so big
- When they send the enquiry, the prospect is focused on the topic; an hour later, they’ve moved on.
- They typically request quotes from several suppliers; the first meaningful reply frames the decision.
- A fast reply is a signal of reliability in its own right.
How to get under 5 minutes: four building blocks
- An instant, personalised email within one minute of the enquiry, with a clear next step.
- A call-back from the AI assistant within five minutes if the prospect asked for one: needs assessment and booking.
- An online calendar where the prospect picks a time themselves, with a reminder.
- An owner for every enquiry: the results tracker shows who takes the next step, and when.
What to watch out for: transparency and consent
The AI assistant should make clear at the start of the conversation that the caller is speaking to an AI, as the transparency rules of the EU AI Act require. Only call people who have asked to be contacted, and always offer the option to speak to a person.
What to measure: median response time and meetings per response band
Track the time to first response (the median, not the average), the share of enquiries that arrive outside business hours, and how many leads in each response-time band turned into a meeting. Within a few weeks, this shows exactly how much money hinges on those minutes.