
Sales leaders rated seven prospecting channels and put AI-assisted personalized email in last place, at 8% effective. Cold calling came second at 47%. Client referrals won at 74%. The findings come from "Cutting Through the Noise: Prospecting in the AI Era," a survey of 153 sales leaders and representatives released Sept 1 by the sales training firm ValueSelling Associates.
The trade press read this as a story about nerve: cold calling works, sellers are frightened of the phone, buy some training. The problem with that reading is that the fear has been falling. When ValueSelling asked a similar group in October 2018, 48% said reps feared making cold calls and 53% said they gave up too easily; this year those numbers are 39% and 46%. Reps got braver and the ranking stayed where it was.
ValueSelling says it revisited questions from its 2018 study. On its own account, cold calls rated 46% effective then and 47% now, while referrals were 77% and are 74%. That is one complete generation of GTM tooling for a difference of three points at the top of the list, and the only genuinely new entrant in 2026, the one nobody had in 2018, finished seventh. Julie Thomas, the firm's president and CEO, said in the release that "cold calling isn't dead" and that "a human voice on the phone remains one of the most effective ways to reach new prospects."
An outsider reading this survey would conclude the industry spent eight years automating the seventh best thing it does.
Dynamic Business's account of the study puts AI use for drafting emails and research at 55% of respondents, personalization at 46% and call preparation notes at 43%. The capability these sellers reach for most often is therefore aimed at the channel they themselves rank last, which says less about the technology than about the job it was given.
The inbox agrees with them. Woodpecker's analysis of more than 20 million cold emails sent through its platform found the average reply rate fell from 5.1% in 2024 to 3.43% in 2026, and attributed the decline in part to a flood of low-effort AI-generated outreach. The same analysis notes that teams leaning on AI for the writing itself see reply rates fall, because AI-detectable copy gets filtered out. We covered the platform side of that flood when LinkedIn started selling the writing tools and then shipped a button to suppress the results. The cost of producing an email fell, and the odds of anyone reading it fell with it.
Everything above the waterline costs somebody an hour: referrals at 74%, cold calls at 47%, LinkedIn and social selling at 40%, conferences and trade shows at 30%, partner and ecosystem introductions at 26%. Below them sit email campaigns at 24% and AI-assisted email at 8%, the two channels that reproduce without anyone spending time on them.
Conferences and trade shows, the line item cut first every budget season because nobody can defend it, placed fourth, ahead of both email lines. We have made a version of this argument from the buy side: a celebrity drink with 516 million followers behind it and White Claw's distribution under it still died in a growing category, because attention bought at scale does not survive to a second purchase. The prospecting data says the same thing from the sell side.
The industry aimed AI at the one part of prospecting that was already commoditized. Producing the message was never the hard part; getting a specific person to give you twenty minutes was, and still is. Every competitor now runs the same models against the same lists, so message production cannot be a differentiator when everyone's production cost is zero. What stays scarce is the calendar.
The teams that beat this survey next year will be the ones that move AI off the send and onto the preparation, into better targeting and better reasons to be in the room. Every hour of AI capacity spent producing more messages is an hour spent making the 8% smaller.
The caveat matters. ValueSelling sells prospecting training, the study's recommended fix is training, and 153 respondents is a small sample, so treat the remedy with the skepticism a vendor-commissioned survey earns. The ranking is a different matter. Practitioners rated seven channels against each other and put the automated one last, in the same research where they reported using automation more than anything else. That is not a sales pitch. That is a confession.
Eight years of tooling and the phone still beats the machine six to one. The tools were never the problem. The assumption that more messages equals more pipeline was.
Pieter Limburg, house analyst, Undivided Attention