How to write a cold email that gets replies
Most cold emails fail in the first line, and the first line is almost always about the sender. "I'm a freelance designer with eight years of experience specialising in…" — the reader is gone. Not offended, not annoyed. Just gone, because nothing in that sentence was about them.
A cold email is not a pitch. It is a request for thirty seconds of attention from someone who did not ask for it, and it succeeds or fails on whether those thirty seconds are obviously about the reader's problem rather than your CV.
Here is the structure that works, line by line, plus the things that quietly kill an otherwise good email.
The four-line structure
Short emails outperform long ones so consistently that length is the easiest variable to fix. Aim for under 90 words. Four lines is enough:
Line 1 — a specific observation about them. Something you could only write after actually looking. Not "I love your website" but "your pricing page lists three plans but the comparison table only covers two".
Line 2 — the consequence. Why that thing matters, in their terms — revenue, time, risk, customers dropping out.
Line 3 — a hint of the fix. Enough to show you know how. Not a full solution, which removes the reason to reply.
Line 4 — a tiny ask. One question, answerable with a single word.
What it looks like in practice
Hi [NAME],
Your pricing page lists three plans, but the comparison table underneath only covers two of them — the [PLAN] column stops halfway down.
On a page like that, the comparison table is usually where people decide, so anyone weighing up [PLAN] is left guessing.
It's about a two-hour fix, and there's a related change to the mobile layout that probably matters more.
Worth me sending over what I'd change?
[YOUR NAME]
Notice what is missing. No credentials. No portfolio link. No "I'd love to jump on a quick call to discuss how I can help you achieve your goals." The email earns a reply by being useful before anything has been agreed, and the ask is small enough that saying yes costs nothing.
The subject line
Write it last, and write it like an internal message from a colleague rather than a marketing email. Lower case is fine. Six words is plenty.
Good: your pricing page comparison table · quick note about your checkout · question about the [X] page
Bad: Boost Your Conversions Today! · Partnership Opportunity · Following up
The test: would this subject line look out of place if a coworker sent it? If yes, rewrite it.
The four rules underneath the structure
Lead with them, not you. The first sentence must contain something about their business that you could not have written about anyone else's. This is the single biggest predictor of a reply, and the only part that cannot be templated.
Make the ask tiny. "Worth me sending over what I'd change?" costs the reader one word. "Do you have 30 minutes this week for a call?" costs them a calendar slot and a decision about whether you are worth it. Ask for the smallest possible next step and let the conversation escalate itself.
Keep it under 90 words. Long emails read as work. If your email requires scrolling on a phone, it is being deleted on a phone.
Follow up twice, then stop. Most replies come from a follow-up, not the first message — but three is where helpful becomes irritating. Two follow-ups, spaced about four and ten days out, then leave them alone.
The follow-up that works
Do not send "just bumping this to the top of your inbox". It adds nothing and signals that your first email was not worth much either. Add something instead:
Following up on the comparison table — I mocked up what the fixed version would look like, in case it's easier to judge than a description: [LINK]
If it's not a priority right now, no problem at all — just let me know and I'll stop emailing.
[YOUR NAME]
That last line does real work. Giving someone explicit permission to say no makes a reply substantially easier, and a clear no is far more valuable to you than silence — it frees the slot in your pipeline and your head.
What kills a cold email
Attachments. They trigger spam filters and nobody opens one from a stranger. Link instead.
A wall of credentials. Your experience is the reason you can spot the problem. It is not the reason they should reply.
Obvious mail-merge damage. "Hi {first_name}" ends the conversation permanently. Send fewer, better emails.
Flattery. "I'm a huge fan of what you're building" from someone who has never mentioned the product is transparently fake.
Asking for a call as the first step. A call is a big ask from a stranger. Earn it with an email exchange first.
How many should you send?
Fewer than you think, with more care each. Twenty genuinely researched emails will outperform two hundred templated ones, and the difference is not close — because the researched ones are the only ones whose first line can pass the test above.
Track what you send. A simple log of who, when, what you noticed, and whether they replied will teach you more about your market in a month than any amount of advice. If you already keep a client tracker, add a tab for outreach.
And when someone does reply with interest, have the next step ready: a clear proposal beats an enthusiastic email that leaves them wondering what happens now.
Frequently asked questions
How long should a cold email be? Under 90 words. Four short lines — a specific observation about them, why it matters, a hint of the fix, and a one-word ask — is enough. If the reader has to scroll on a phone, the length itself is costing you replies.
How many times should I follow up on a cold email? Twice, roughly four and ten days after the first message, then stop. Most replies arrive on a follow-up rather than the original email, but a third follow-up moves you from persistent to irritating. Always add something new instead of just bumping the thread.
What should the first line of a cold email say? Something specific about the reader's business that you could not have written about anyone else. Not a compliment and not your credentials — a concrete observation that proves you actually looked. This single sentence predicts replies more than anything else in the email.
Should I ask for a call in the first cold email? No. A call is a large commitment from someone who does not know you. Ask for something that costs one word to agree to, such as permission to send your suggestions over, and let the conversation escalate from there.