The research
Why the first hour decides most deals
The best-known research on this comes from Harvard Business Review. In 2011 its researchers sent test inquiries to 2,241 US companies and measured how long each took to respond.
Companies that replied within an hour were nearly seven times as likely to have a real conversation with the decision-maker as companies that replied even an hour later.
Two other figures get quoted a lot. The MIT and InsideSales lead response study found leads contacted within five minutes were 21 times more likely to be qualified than leads contacted after 30 minutes. And Velocify, looking at 3.5 million leads, reported a 391% higher conversion rate when the call happened within the first minute.
The exact numbers vary by industry. The direction never does: slower replies lose deals you've already paid to generate.
Harvard Business Review, 2011: 2,241 US companies
Replied within an hour37%