Haren says free-forever beat a 7-day trial on the same list
Two companies, same audience, same infrastructure, and the only variable Haren names is the offer written into the email.
Taylor Haren says two companies selling basically the same thing to the same audience ran on the same list and the same infrastructure, and the only thing that separated them was the offer named in the cold email. The company with a free-forever tier got one signup every 52 emails. The company offering a 7-day trial got zero customers.
Haren calls that a 12x difference. It is worth being blunt about the arithmetic. If one side genuinely produced zero customers, there is no multiple to compute, so the number is loose. The direction is the finding. The multiple is framing from the person who then sells you the analysis behind it.
The copy he will not give away
The offer comparison sits inside a longer post about why Haren says he does not publish his cold email copy. He describes one campaign that told people to "reply yes if you want the free link to sign up." He says it was dead simple and converting, then he posted it publicly, and within a few weeks every cold email he received carried the same CTA. The offer started working worse and his team switched angles. The replacement performed better, but he describes the switch as a hit at the time.
His read on why copy-pasting a winning line fails is the part worth keeping.
What he says he ran the numbers on
Haren says he had Claude analyze 12.2M cold emails sent this year to find what his best performers have in common, and that those emails generated more than $10M for clients. The output he lists includes the subject lines that booked the most meetings, which value props convert and how to package them, when a free tier, trial, demo, direct reply or incentive makes sense, and the tone of voice that performs best. He also says it covers how his team asks for meetings without, in his words, wasting millions of sends on "is this a priority?"
None of those findings are in the post. The 12.2M figure is his own count of his own sends, and the post ends as a pitch for the formula behind it.
For people sending, the usable piece is the structural one. If you are testing copy lines while the offer stays fixed, Haren's example argues you are testing the smaller variable. A free-forever tier and a 7-day trial are different asks, and the ask is what the prospect is actually replying to.
People see a winning line and copy the words. They miss the thing that made it work in the first place.
The "free trial" company got zero customers.
Know what is landing before you burn another domain
One email a day. Under three minutes. What the operators found out yesterday.