Founders and owners reply to cold email more often than anyone else in a company, 0.57% compared with 0.42% for C-level executives, according to an analysis of over 7.5 million cold emails sent in 2025 by Belkins. That number kills the excuse most sales teams use to avoid emailing the top of the org chart: they are too busy, they will not read it, aim lower. The data says aim higher. The problem is not who you are emailing. It is how you are writing to them.
You get nine seconds, maybe
Executive buyers take under three seconds to decide whether to open a cold email, and if they do open it, they read for no more than nine seconds, according to Gong. Nine seconds is not enough time to read a value proposition, a case study reference, and a call to action stacked across three paragraphs. It is enough time to read one clear sentence about why you are emailing this specific person, and decide whether to keep going. Everything you write has to survive that cut. It's not about being clever. It's about being fast to parse.
Subject lines: fewer words, more replies
A study of 500 B2B cold emails across 50 sales reps and 12 ideal customer profiles found subject lines under four words produced an 8.9% reply rate, 4.2 times higher than subject lines over 13 words, according to Gangly. A long subject line reads as marketing before the recipient ever opens the message. A short one reads as a note from a person. "Question on the Acme rollout" beats a full sentence explaining your value proposition before anyone has agreed to read it.
Body length: 75 to 100 words is the number to hit
A 2016 analysis of 40 million emails found messages between 50 and 125 words got the highest response rates, over 50%, with the 75 to 100 word range reaching 51%, according to Boomerang. Emails under 25 words scored about the same as emails running 2,000 words, close to 44% for both, per the same analysis. A one-line email with no context fails almost as badly as a wall of text. The window that works is narrow: enough words to name the specific reason you are reaching out, not enough to require a second read.
Write the email to be read once, in nine seconds, by someone who has never heard of you. Then cut it in half.
Timing is not a minor detail
A benchmark analysis of 53.1 million cold emails and 60,000 sequences sent between January and June 2026 found the optimal send window is 9:30 to 11:30 AM in the recipient's local time zone, with Wednesday the highest reply day and Friday the worst, according to Saleshandy. Scheduling a Friday afternoon send because it fits your calendar is a decision made for your convenience, not the recipient's inbox. Match the send time to when a founder is actually working through email, not when you happen to be writing the campaign.
The follow-up is not optional
Adding a single follow-up email to a cold sequence increases total replies by 65.8%, and the first follow-up carries an 8.4% reply rate on its own, the highest of any individual step in the sequence, according to Woodpecker. A busy founder who did not reply to email one is not rejecting you. Most of the time they scanned it in the nine second window, meant to come back to it, and did not. The follow-up works like a reminder: one line, referencing the first email, sent a few days later.
Seniority is not the risk
An analysis of 1 million cold emails sent to 1.2 million B2B contacts found C-level executives had a 0.270% positive reply rate versus 0.088% for directors, three times higher, according to Sales.co. Combined with the Belkins finding on founders and owners, the pattern holds across two separate datasets: the person with the authority to say yes replies more than the person whose job is to filter requests before they reach that authority. Every layer of seniority you go down to feel safer is a layer of gatekeeping you are adding on purpose.
What to do this week
Pull your last ten cold emails. Cut every subject line to under four words. Cut every body to the 75 to 100 word range. Check your send times against the 9:30 to 11:30 AM local window and move anything scheduled for Friday. And if your sequence stops at one email, add a second: one line, sent a few days later, referencing the first. That is the whole fix. None of it requires a bigger list or a better tool. It requires writing less, to more senior people, at a better time, and following up once.