Lead Response Time in 2026: Why 30 Seconds on WhatsApp Beats a 5-Minute Callback
The 5-minute rule was written in 2007. In 2026, it isn’t fast enough. Harvard Business Review found firms contacting a lead within 5 minutes were 100x more likely to qualify it — but 78% of buyers now prefer WhatsApp over a phone call. Here is why lead response time is the single most under-invested lever in B2B and B2C sales right now, and the five-step playbook to move from a 5-hour response to 30 seconds.