A cold email should usually be 60 to 100 words, about five short sentences. That isn't a statistic from a study. It's the length a busy person can read on a phone in under half a minute, and it's long enough to say who you are, why you picked them, what you do and what you're asking.
Longer emails aren't forbidden, and there are cases where they make sense. But if you're unsure, shorter wins, because short emails get read and long ones get closed. Below is the same email at 200 words and at 80, so you can see what gets cut and what stays.
Four things in 50 to 100 words
Write the shortest email that contains four things: a reason you wrote to this person, one sentence on what you do, one question, and your name. If your draft has those four and nothing else, it will land between 50 and 100 words.
Treat the 60 to 100 range as editorial advice, the sort of thing you learn from reading other people's cold emails and noticing which ones you answered. Nobody has published a rule that applies to every industry, and any article that gives a single "optimal word count" with a decimal point is selling something. Your own replies are the test. If you want to check yours, see what is a good cold email reply rate.
Why short emails get answered
Think about who is reading. A property manager is in a truck between buildings. She opens the email on her phone, in sunlight, with one thumb. If the message doesn't fit on one screen, she has to scroll, and scrolling is where she decides it's homework.
A short email also signals that you respect her time. It suggests you know what you want and are asking for something small. A long email tells her she's about to get a pitch, and she's right.
There's a quieter reason too. Short emails are easier to answer. A reply to a three-sentence message can be two words. A reply to a six-paragraph message requires her to figure out which part to respond to.
What every cold email needs
- A first line about them, so it's clear you didn't send the same thing to a thousand people.
- One sentence on what you do and for whom.
- One question, small enough to answer in a line.
- Your name, business and phone number, so they can verify you.
- A way to opt out, as one sentence under your signature (see how to send cold email that is not spam for what US law expects).
Everything else is optional, and most of it hurts. Case studies, a company history, three bullet points of benefits, a P.S. with a second offer, a link to a calendar: you can add these in a later email once someone has answered.
A 200-word email, cut down
Gabe installs outdoor lighting. He's writing to Sheila, who manages a homeowners association. His first draft:
Subject: Outdoor lighting solutions for your community
Hi Sheila,
I hope this email finds you well. My name is Gabe Moreno and I'm the owner of Evergreen Lighting. I wanted to reach out because I came across your community, Alder Ridge, and thought you might be interested in our services.
We have been installing and maintaining outdoor lighting for more than twelve years. We offer LED pathway lights, entrance monument lighting, parking lot fixtures, and holiday lighting. We are fully licensed and insured, and all of our work comes with a two-year warranty. Many HOAs find that good lighting improves safety, reduces liability, and increases curb appeal, which can help with property values.
I would love to schedule a quick call to learn more about your needs and to tell you more about how we can help Alder Ridge. I am available Monday through Friday between 9 and 5. Please let me know what works for you. I have also attached our brochure and a list of references for your review.
Thank you for your time, and I look forward to hearing from you.
Best regards,
Gabe Moreno
Owner, Evergreen Lighting
That's about 200 words. Sheila will read the first sentence ("I hope this email finds you well") and know she's being pitched. The useful parts, licensed, insured, twelve years, are buried. And it ends by asking her to figure out a call.
Here's the version after cutting:
Subject: lights at Alder Ridge
Hi Sheila,
I drove through Alder Ridge last week and noticed several path lights out along the east entrance.
I install and maintain outdoor lighting for HOAs in the county. Licensed and insured, twelve years in business.
Who handles lighting repairs for the board right now?
Gabe Moreno
Evergreen Lighting
(555) 010-0124
That's 75 words in the body. It kept the proof (licensed, insured, twelve years), cut the adjectives, dropped the attachments and the call request, and replaced a vague ask with a question Sheila can answer in a line. Note too that it opens with something he saw, which makes it believable. If you keep only one change from this article, keep that one. Personalization at low volume explains how to find a first line like that fast.
When a longer email is fine
Occasionally 150 to 200 words is right. If you're writing to a specific person who asked for details, if you're following up after a conversation, or if your offer is hard to explain in one sentence (a financial product, a technical service), a few more lines can help. The same goes for a reply to someone who already answered you. They've shown interest, so a thorough response is welcome.
The test is whether each extra sentence answers a question the reader would have, or only adds weight. If you're adding a paragraph because you're nervous that the email doesn't say enough, that's a sign to cut. A related decision, what to ask for, is in cold email call to action examples.
Mobile screens and the first line
On a phone, the subject and the first line or two of the body show in the inbox preview before the email is opened. That preview is your real headline. If the first line is "I hope this email finds you well", the preview wastes the only part of the email that most people ever see. Open with the reason you wrote to them.
Keep paragraphs to one or two lines. A paragraph that fills the screen looks dense. Put a blank line between each idea. Avoid images, tables and columns, which don't display well on small screens and look like marketing mail. Before sending, email the draft to yourself and read it on your phone. If you need to scroll, trim.
A checklist before you hit send
- Is the body under 100 words? If not, what can go?
- Does the first line mention something true about them?
- Is what you do in one sentence?
- Is there exactly one question?
- Is there no attachment and at most one link?
- Do your name, business and number sit under it, with the opt-out line?
- Does the email fit on a phone screen without scrolling much?
- Would you answer it if a stranger sent it to you?
If you can answer yes to all eight, send it. And if you'd like to see how the same principle applies to the rest of the message, why to stop measuring opens explains what to track instead of reading too much into a number.
Rocketship's AI worker writes each email to the person it's addressed to, sends it from your own Gmail, and handles the follow-ups, so the short version doesn't depend on you finding time to write it. The AI workers page shows how.
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