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Speed-to-lead: why the first 5 minutes decide
The speed of your first response to a new lead is one of the strongest drivers of conversion. According to the MIT/InsideSales study, a company that calls within 5 minutes is up to 21x more likely to qualify the lead than one that waits 30 minutes. Most companies respond in hours, or never – and that is exactly where an AI voice agent that calls within a minute, 24/7, wins.
Key figures
100x / 21x
higher odds to connect / qualify when responding in 5 min vs 30 min
Source: MIT / InsideSales Lead Response Management
+391%
higher conversion when calling within 1 minute (~3.5M leads)
Source: Velocify
42 h
average first response; 23% never respond
Source: HBR (2011)
Wed / Thu
best days to contact (+49.7%) and qualify (+24.9%)
Source: MIT Lead Response Management
Best practices
- Call a new lead ideally within 1–5 minutes of the enquiry.
- Do not rely on email alone: a call has a much higher reply rate.
- Automate the response – a human team cannot call within a minute 24/7.
- After the first attempt, follow up at strategic intervals.
- Track speed-to-lead as a key metric.
FAQ
How fast should you call a new lead?
Ideally within 1–5 minutes. The MIT/InsideSales study shows that responding within 5 minutes means up to 21x higher odds of qualifying the lead versus responding after 30 minutes.
Why is email worse than a call for the first response?
A call reaches the prospect at peak interest and has a higher reply rate. The best approach is to call immediately and then follow up.
How does an AI voice agent help?
The AI agent calls within a minute of a form submission, at any time – including nights and weekends. It qualifies the lead and hands a ready one to sales.
Sources
- MIT / InsideSales – Lead Response Management Study
- Harvard Business Review – The Short Life of Online Sales Leads (2011)
- Velocify – Ultimate Contact Strategy (PR Newswire)
Related topics
- Reactivating dormant leads: revive a database you already paid for
- AI voice agent: what it is, how it works and when it pays off
- Reducing no-shows: appointment reminders that work
- Measuring satisfaction (NPS): why phone beats email
- AI vs human call center: how much you really save
- Lead qualification: fast, cheap and without losses
- AI in customer support: what to automate and how much to save
- Follow-up strategy: how many times and when to call
- GDPR and AI calling: what to watch out for
- AI product support for e-shops: an agent that knows your catalog
Updated 2026-07-24.