The two channels, honestly
Directional figures from trades businesses' own reporting rather than a study. The pattern is consistent enough to plan around; the exact numbers are not.
| Dimension | Phone call | Text or WhatsApp |
|---|---|---|
| Gets some kind of answer | Higher — a live conversation is hard to ignore | Lower, but not by as much as people assume |
| Your time per follow-up | 5–15 minutes including the ones that go to voicemail | Under a minute, or zero if automated |
| Can be done at scale | No. Forty quotes a month is a day's phoning. | Yes, trivially |
| Handles objections | Excellently — you can hear the hesitation | Poorly. You get the objection or you get silence. |
| Feels intrusive to the customer | Sometimes, and increasingly so | Rarely, if spaced properly |
| Leaves a record of the price | No | Yes, and they can forward it to whoever else decides |
| Works when they are at work | No | Yes |
The row that decides it for most businesses is the second one. A call is better per attempt and impossible at volume, which makes the real question how many quotes you send rather than which channel you prefer.
The crossover
Put a value on your own time — for most trades somewhere between forty and ninety an hour. A follow-up call costs you ten minutes including the failures, so call it ten to fifteen dollars. A message costs effectively nothing.
Now put that against the job. On a six-hundred-dollar callout, fifteen dollars of your time to slightly improve the odds is a poor trade, and doing it forty times a month is a working day you did not have. On a thirty-thousand-dollar extension it is not a decision at all — you would call twice.
Somewhere between those two the lines cross. In practice most trades find it around two to three thousand dollars of job value: below that, message; above it, message first and then call once if there is no answer.
The sequence that uses both
Not a choice between channels — an order. This is what the businesses with the best conversion actually do.
- 1
Day 3: message, always
Whatever the job size. It is free, it leaves a record, and it catches the people who were going to reply anyway.
Starting with a call on a small job is the classic mistake: you spend fifteen minutes reaching someone who would have answered a text in four seconds.
- 2
Day 10: message on small jobs, call on large ones
This is where the crossover applies. Above your threshold, pick up the phone.
The call at day ten is the one that earns its money, because ten days of silence on a large job usually means a specific unspoken objection — and objections can be answered out loud and cannot be answered in a text.
- 3
Day 21: message, always, whatever the size
The graceful close, in writing. Never do this one by phone.
A closing phone call puts the customer on the spot and produces a polite lie. In writing they can take a day, decide, and tell you the truth — and a surprising share of them say yes instead.
Two messages and at most one call. The call sits in the middle because that is the only slot where a conversation adds something the message could not have carried.
If you are going to call, do these
Five things that separate a useful follow-up call from an uncomfortable one.
- Have a reason that is not the quote"I'm in your area Thursday" or "prices on the cable moved and I wanted to hold yours". Calling only to ask whether they have decided puts them on the spot, and people who are put on the spot say no.
- Call between six and eight in the eveningDomestic customers are unreachable and irritable during the working day. This is not a subtle effect.
- Ask an open question in the first fifteen seconds"What did you make of the quote?" outperforms "have you had a chance to look at it?", which invites a no and ends the call.
- Do not leave a voicemail on the first attemptA voicemail converts your call into a message with worse delivery. If they do not pick up, text instead — the text will be read.
- Call onceA second unanswered call is where a follow-up becomes a problem. If the first one does not land, the channel has answered your question.
The counterarguments
- I win jobs on the phone. That is just how it works in my trade.
- Very likely true, and the sequence above does not disagree — it puts the call at day ten where it does the most work. What it disputes is calling forty times a month, which is a day of your week spent to improve the odds on jobs that would mostly have answered a text.
- Texting feels impersonal for a big job.
- Agreed, and that is exactly why the threshold exists. Above two or three thousand the customer expects a conversation and a message-only sequence reads as indifference.
- Older customers do not text.
- A real segmentation and worth respecting where it applies. It is also less true every year, and the safest version is to follow up on whichever channel the customer used to contact you in the first place.
- Automated messages cannot handle an objection.
- Correct, and they are not meant to. Their job is to surface the objection so that a human can answer it. A sequence that produces a reply saying 'it's more than we wanted to spend' has done its entire job.
Questions
What about email?
Should I text from my personal number?
How long should the day-10 call be?
Does WhatsApp change the calculation?
Tell me when this exists
In the context field: your average job value. That is the number the crossover depends on.