Call back in minutes, not hours. The best published data on web leads points at the first five minutes, and the odds drop hard after that. Nobody has run that study on plumbers or roofers in your town, so treat five minutes as the target and the same working day as the floor.
The five minute number, and where it came from
The figure everyone quotes comes from the InsideSales.com/MIT Lead Response Management Study, presented on October 16, 2007 at MarketingSherpa’s Business-to-Business Demand Generation Summit and published by InsideSales.com that same year.
The sample is small enough to state plainly. Three years of data, six companies, over fifteen thousand leads, and over one hundred thousand call attempts.
Here is the finding in the study’s own words. “The odds of contacting a lead in 5 minutes versus 30 minutes drop by 100 times! In fact, from just 5 minutes to 10 minutes the odds decrease by 5 times.” On qualifying a lead, the drop from 5 minutes to 30 minutes was 21 times.
Widen the frame and the shape holds. The study says the odds of calling to contact a lead “decrease by over 10 times in the first hour.” It also found something stranger. “After 20 hours every additional dial your salespeople make actually hurts your ability to make contact to qualify a lead.”
Read the fine print before you build a plan on it
That study was published by InsideSales.com, which sold a web-form callback dialer. Its own summary states that the study “caused a significant shift in our corporate positioning.” A vendor measuring whether its own product category matters is not a neutral referee.
It gets called “the MIT study” a lot. James Oldroyd was a faculty fellow at MIT’s Sloan School of Management at the time. The data came out of InsideSales.com’s own system.
Four more limits, all printed in the document itself:
- Six companies and three years of call records. The document never names the companies or the trades they work in. It does say InsideSales.com’s own heaviest users sat in mortgage and insurance. Nothing in it points at a roofing company.
- “This study did not address close ratios.” It says nothing about money collected.
- Every company defined a “contact” differently, anywhere from 2 to 6 minutes on the phone, and each had its own way of marking a lead qualified.
- Oldroyd “finds these clear patterns in the data only when data from several companies is combined together.”
Asked why speed mattered, the authors wrote: “Though we don’t exactly know for sure, we have a few educated guesses.” That is the honest version. Contact rates were higher after calls went out inside five minutes. Nobody proved the speed caused the work. Shops that answer fast may simply be better run shops.
The Harvard write-up, and the part you cannot check
Four years later Oldroyd and Elkington published “The Short Life of Online Sales Leads” in Harvard Business Review, with a third author, Kristina McElheran. The HBR store lists it as a two page article, product F1103B, dated March 1, 2011, at six dollars.
What you can read without paying is a short preview. The store description says companies “spend billions of dollars on internet-generated sales leads, but most are far too slow to follow up on them.” The article page opens with a question and one line of finding: “Are you confident that your company is effectively handling potential customers’ online queries? Think hard. Our research shows that most companies are not responding nearly fast enough.”
The rest is behind the paywall. Large sample figures from that article get repeated all over the web by people who never opened it. Those figures could not be verified for this page, so they are not printed here. If somebody quotes a number from it at you, ask which page it sits on.
What fast looks like when your arm is in a wall
You cannot call anyone back in five minutes with your arm behind a toilet. That is the real constraint, and no study fixes it.
The workable version for a trade has three parts.
- Somebody who is not on the tools sees the lead within minutes during working hours.
- Every lead gets a call the same working day. No exceptions, no leaving it until tomorrow.
- After hours, something answers and writes down the name, the address, and the problem.
If you already do all three, go back to work. Do not buy anything. A one truck operation that calls everybody back by the end of the day and is booked out three weeks does not have a speed problem. It has a capacity problem, and a new website will not fix that.
An AI assistant is one way to cover the hours when nobody is at a desk. It can answer a question at ten at night and take down what the person needs. It does not dispatch a truck, it does not price a roof, and it does not replace the callback.
The fastest callback in the county is worth nothing if the lead never reaches you. Form mail landing silently in spam is common and fixable, and it has its own answer in why your form emails end up in your junk folder.
Before you speed dial, check the rules on calling people
Chasing speed pushes people toward auto-dialers and six in the morning callbacks. Two federal lines are worth knowing before you go there.
The Federal Trade Commission’s Telemarketing Sales Rule sits at title 16 of the Code of Federal Regulations, part 310. In the edition revised as of January 1, 2025, section 310.2 at paragraph (q) defines an established business relationship to include “The person’s inquiry or application regarding a good or service offered by the seller, within the 90 days immediately preceding the date of a telemarketing call.” A quote request is an inquiry. Ninety days is the window that clause gives.
The same rule, at section 310.4(c), calls it an abusive practice for a telemarketer to make outbound calls to a person’s residence “at any time other than between 8:00 a.m. and 9:00 p.m. local time at the called person’s location,” absent prior consent. Even in a hurry, 8 a.m. is the early end.
This is not legal or tax advice. Whether these rules reach a callback from your shop, and what your own state piles on top, is a question for your attorney and your state licensing board. Plenty of states run their own do-not-call and telemarketing rules.
What to do next
Half an hour of work, no purchase required.
- Time yourself. Fill in your own form on a Tuesday morning and write down the minutes until a human called back. That number is your starting point, not a guess.
- Name one person per shift who watches the lead inbox. A rule with nobody assigned to it is not a rule.
- Put a same-day floor in writing. Every lead gets a call before anyone goes home.
- Call first, email second. People who fill in a form still answer their phone.
- Hold the overnight ones until 8 a.m. rather than dialing at dawn.
- Then work out what is actually arriving, which is a separate job with its own steps in how to tell if your website is getting you calls.
None of this is a promise of more work. Nobody honest will put a number on the calls a website brings you. Speed is the cheapest item on the list, since it costs a rule and a phone rather than a rebuild. If the site itself is slow to open on a phone, that is a bigger and more expensive job, and the only site Galloping can show end to end is its own build, which scored 100 on Google’s PageSpeed test on desktop and on mobile, when it launched in August 2026.