How to write a cold email people answer
A cold email is a first email to someone who doesn't know you yet, and the ones that get answered tend to share four traits. They're about the reader rather than the sender, and they give one real, specific reason for writing to this person now. They're short enough to read on a phone in under a minute, and they end with one small request that's easy to accept or decline.
AI can help with most of that, because it can summarise a prospect's website in seconds, suggest a reason to write and draft a tight email. What it can't do is confirm that the reason is true, or decide whether this person should hear from you at all, so that judgement stays with you.
This guide walks through the method one prospect at a time, with three prompts, a cold email template, a follow-up plan and the legal and deliverability basics. Deliverability simply means whether your email reaches the inbox rather than the spam folder. The aim is a few good emails a day, not hundreds of careless ones.
Seven steps to a cold email worth replying to
Step 1: Pick a prospect you can really help
Start with fit rather than volume. A good prospect has the problem you solve, can afford the solution and employs a person you can name who owns that problem. Write one sentence explaining why you could help them more than most suppliers, and if you can't write it, move on. Ten carefully chosen prospects are worth more than a thousand scraped names, because every one of them deserves a real reason to hear from you.
Step 2: Research one prospect for 15 minutes
Read what the company has published about itself, including its website, news or blog page, job adverts, product pages and recent posts from the person you plan to contact. Copy the useful parts into a note, and record where each fact came from so you can check it later.
Then paste that note into your AI with the prompt below, which turns the raw material into a short brief and keeps verified facts separate from guesses.
Prompt: Turn my research into a prospect brief
You are a careful sales researcher. I'm about to write a cold email to one company. What I sell: [one or two lines] Who I usually help, and the problem I fix: [one or two lines] My research notes on the prospect, with where each came from: [paste text from their website, news page, job ads or posts, with the link for each] Do this: 1. Sum up the company in 3 lines: what they sell, who to, and anything new. 2. List up to 5 facts that could connect to what I sell. Quote the source line and give its link. 3. For each fact, say in one line how it might connect to my offer. Label this "my guess". 4. Pick the single strongest reason to write to them now, and say why. 5. List what I still don't know that matters (for example, who owns this problem). Rules: - Use only my notes. Never add a fact about the company that isn't in them. - Keep facts and guesses clearly apart. - If my notes give no good reason to write, say so plainly.
Step 3: Find one relevant reason to write now
The reason is the heart of the email, because it connects something true about the prospect to something you actually do. "You've just opened a second shop, and I set up stock systems for two-shop retailers" is a genuine reason, while "I came across your company and was impressed" is not.
Good reasons usually come from a recent change, such as a new product, a new location, a job advert for your area or a public post about a challenge. One reason is enough, since three reasons start to read like a list generated by a tool.
Step 4: Write it short
Keep the body to about 50 to 120 words and lead with the prospect's situation rather than your own. Use plain language without jargon or pressure, and introduce yourself in a single line. Then add one line of proof, such as a similar client or a result you can demonstrate. Leave out your full service list, your company history and any attachments, which only make a stranger's decision harder.
Step 5: Make one small ask
Ask for something easy to agree to, such as a 15-minute call next week, permission to send a two-page example or the name of whoever looks after this area. Asking for a long meeting or a purchase in a first email is too much, too soon. Include a polite way to say no as well, so the reader doesn't feel cornered.
Prompt: Write my cold email from the brief
You are a plain-spoken B2B copywriter. Write one cold email to [first name], [their role] at [company]. My prospect brief (facts with sources): [paste the brief from the research prompt] The one reason I'm writing now: [the reason you picked] What I sell, in one line: [your offer] One piece of proof I can show: [a real client, example or result, or "none yet"] The one ask: [for example, a 15-minute call, or permission to send an example] Write: - 3 subject lines, under 40 characters, plain and honest. No "Re:" or fake urgency. - One email body of 50 to 120 words: open with the reason, one line on who I am, one line of proof, then the ask. - A short sign-off with my name and company. Rules: - Use only facts from the brief and this prompt. Never invent a compliment, mutual contact, result or number. - Don't say I read or loved something unless the brief shows I did. - One ask only. No exclamation marks. Make it easy to say no. After the email, list each claim it makes and where in the brief it came from.
Step 6: Plan two or three follow-ups
People are busy and miss emails, so a follow-up is reasonable. Mailchimp's guide to writing cold emails suggests waiting a few days before you follow up, and it also warns that too many messages annoy people. A sensible plan is two or three follow-ups, spaced a few days to a week apart, after which you stop completely.
Each follow-up should add something new, such as a short example, a useful link or a different angle on the same reason, whereas "Just bumping this up" adds nothing. The final message can close the conversation politely by saying you'll stop here and that they know where to find you.
Prompt: Write follow-ups that each add something
Here is a cold email I sent to [name] at [company] on [date]. They haven't replied. [paste the email] My prospect brief: [paste it] Useful things I could add (only use these): [for example: a 2-page example, a short how-to tip, a relevant case study link, a different benefit of the same offer] Write 3 follow-ups: - Follow-up 1 (send after 4 working days): add one new useful thing. Under 70 words. - Follow-up 2 (send a week later): a different angle on the same reason. Under 70 words. - Follow-up 3 (send a week later): a polite close that makes no further ask. Under 50 words. Rules: - Each one must stand on its own and add something new. No "just checking in" or "bumping this". - Use only facts from the brief and my list. No guilt, no fake deadlines. - If they reply at any point, I stop the sequence. Add that as a note at the top.
Step 7: Check before you send
Read the email as if you were the prospect, and check that every fact about them is true and comes from a page you actually saw. Ask yourself whether you'd be glad to receive it and whether the request is clear. Then send it yourself, from your normal email account, one message at a time.
A cold email template you can adapt
Use this as a structure rather than a script, and fill each line with your own facts.
Subject: [their thing] + [your thing], in 4 to 6 words Hi [first name], [The reason: one true, specific thing about them, and why it made you write.] I'm [name], and I [what you do] for [the kind of business they are]. [One line of proof: a similar client, an example, or a result you can show.] [The one small ask, as a question.] If it's not a fit, no problem at all. [Your name] [Company, website] [Postal address and a line on how to opt out, where the law needs it]
| Part | Its job | Length |
|---|---|---|
| Subject line | Say plainly what the email is about | Under 40 characters |
| The reason | Show you wrote to them, not a list | 1 or 2 sentences |
| Who you are | Make you real, fast | 1 sentence |
| Proof | Give them a reason to believe you | 1 sentence |
| The ask | One small, clear next step | 1 question |
| Footer | Your details and an easy way to opt out | 2 or 3 short lines |
What does real personalisation look like?
Real personalisation means the email could only have been sent to this particular person. Fake personalisation is a template with their name and company dropped in, and a reader who sees through it stops trusting the rest of the email.
| Fake | Real |
|---|---|
| "I loved your recent post!" (you didn't read it) | "Your post on [topic] said [specific point]. That's the exact problem I fix." |
| "I see you're growing fast." | "Your careers page lists three sales roles in [city]." |
| "Companies like [company] need [your service]." | "You sell [product] to [buyer]. I've helped two other firms that sell to the same buyers." |
| Their first name in every second line | Their name once, in the greeting |
AI makes fake personalisation easy to produce in bulk, which is exactly why you should use it the other way. Let it help you read faster, and use it to check that every personal line rests on a verified fact.
Worked example: a cold email to Mailchimp
Say you're a freelance writer who produces customer case studies for software companies, and you want to pitch Mailchimp, the email marketing company. This is a worked example written for this article, so Mailchimp hasn't seen it, and we're not suggesting that it hires freelancers.
What goes in
Your 15 minutes of research turns up one useful public page, because Mailchimp's success stories page shows customer case studies. When we checked it, these included Riot Fest, a Chicago music festival using text messages, and The Breakthrough Coach, an education company that used popup forms. You paste that text into prompt 1, and the brief comes back with one strong reason: they publish stories about small and mid-sized businesses, which is exactly what you write. It also lists what you don't know yet, namely who runs the stories and whether they use outside writers.
What comes out
Prompt 2 returns something like this example draft, written for this article:
Subject: Your customer stories
Hi [first name],
I read the success stories on your site, including the Riot Fest piece about text messages. They show small businesses solving one clear problem, and that's the kind of story I write.
I'm [name], a freelance writer. I write customer case studies for software companies. [One line of real proof: a client or a published story you can link.]
Who looks after these stories on your team? If it isn't you, a name would be very kind.
[Name]
[Website]
Notice what the draft avoids: it doesn't claim you loved every story, and it doesn't pretend to know their plans. The request is only a name, which is easy to give, and the proof line stays in brackets until you fill it with something true.
There's one more lesson from Mailchimp itself. Its acceptable use policy bans sending campaigns to purchased, rented or third-party lists, or to "publicly available data", so check your own email tool's rules too. In practice, that means you shouldn't send cold email from your newsletter tool, and should instead send it one to one from your own email account.
Deliverability and legal basics
A cold email that lands in spam doesn't get read, and one that breaks the law can cost you far more than a lost reply. Here are the basics as of November 2026, offered as a summary rather than legal advice.
In the US
The FTC's CAN-SPAM guide says the law makes no exception for business-to-business email. Commercial emails must not use misleading subject lines, and they must include your valid physical postal address. They must also offer a clear way to opt out, and you must honour opt-outs within 10 business days.
In the UK
The ICO's guide to business-to-business marketing explains that the email consent rule doesn't apply to companies and similar bodies, which it calls corporate subscribers. Sole traders and some partnerships are treated as individuals, so you usually need their consent. In every case, you must identify yourself and provide a valid address for opting out. UK GDPR still applies whenever you use a named person's details, so keep a "do not email" list and stick to it.
Elsewhere
Rules differ by country, and some are considerably stricter, so check your local regulator's guidance before you start and ask a lawyer if you're unsure.
Deliverability
Google's sender guidelines ask every sender to set up SPF or DKIM, which are records that prove an email really comes from your domain. They also ask senders to keep the spam rate reported in Gmail's Postmaster Tools below 0.3%. Cold email that people mark as spam damages the reputation of your whole domain, including your ordinary emails. So send a small number of well-researched emails, and remove anyone who asks you to stop immediately.
What not to automate
Let your AI help with reading, sorting and drafting, but keep the following jobs for yourself.
- Choosing who to email, because fit is a judgement call that a tool picking people at random can't make.
- Checking facts about the prospect, since one wrong fact in the first line can end the conversation before it starts.
- Pressing send, after reading every email yourself, because your name and reputation are on it.
- Replying to replies, since a real person took the time to answer you and deserves a personal response.
- Honouring "no" and opt-outs by stopping the follow-ups the moment someone replies or asks you to stop, and adding them to your do-not-email list.
- Bulk sending to scraped lists, which you shouldn't do at all, because it breaks most email tools' rules and damages your domain.
Common mistakes, and what to do instead
Starting with "I hope this email finds you well"
This opener wastes the line people see in their inbox preview, so open with your reason for writing instead.
Making the email about you
Introductions like "We're an award-winning agency with 20 years of experience..." can wait. Lead with the prospect's situation, then add a single line about yourself.
Asking for too much
A 45-minute demonstration is a big request from a stranger, so ask for a short call, a name or permission to send an example instead.
Letting AI make up a compliment
AI will happily write a line about being blown away by a recent launch, and if you didn't see the launch, you need to cut it. The prompts above help here, because they make your AI list where every claim came from.
Following up with nothing new
A message that says "Just bumping this" asks for their time and gives nothing back. Add an example, a tip or a new angle each time, and stop after three attempts.
Sending too many, too fast
High volume brings spam complaints, and complaints damage your domain's reputation, so send fewer, better emails at a steady pace.
Where AI Blocks helps
All of these are free: copy the prompt or download the skill, then use it in your own AI, such as ChatGPT, Claude or Gemini. AI Blocks doesn't send email on your behalf, so you remain the person who sends every message.
- Cold email writer: share your buyer, offer and proof to get a cold email, follow-ups and sending guidance.
- Cold email claim checker: paste your draft and the prospect's page text, and each claim gets tested before you receive a tighter version.
- Cold email pre-send checker: checks claims about the prospect and the legal basics, then gives you a tighter version.
- Follow-up email sequence writer: turn one email into four follow-ups, each with a new reason, one ask, timing and a stop rule.
- First outreach message writer: write a cold email or call opening a stranger can read in seconds, with two short versions.
- Sales outreach writer: a specialist you can download. Give it what you sell, what it roughly costs and one result you can point to, and get a cold email under 150 words with one clear ask.
- Prospect list and first-message planner: build and rank a prospect list, draft checked first messages and plan a daily outreach block. You send the messages.
- Inbox delivery fixer: share your sending domain to get SPF, DKIM and DMARC checks with a step-by-step repair plan.
To make sure the drafts sound like you, read how to make AI writing sound like you. To stop invented facts creeping in, see how to stop AI making things up. For people who did sign up to hear from you, use a welcome email series instead.
Questions people ask
Is cold emailing legal?
In many places it is, provided you follow the rules. In the US, CAN-SPAM covers business email too, with requirements for honest subject lines, a postal address and opt-outs. In the UK, you can email companies without consent under PECR (the UK's electronic marketing rules), but sole traders usually need to have given consent. Check your own country's regulations too.
How long should a cold email be?
It should be short enough to read on a phone in under a minute, which usually means a body of about 50 to 120 words. If the reader needs to scroll, cut it further.
How many follow-ups should I send?
Send two or three, a few days to a week apart, with each one adding something new. Mailchimp's guide says to wait a few days before following up and warns that too many messages annoy people, so stop the moment they reply.
Can AI write cold emails for me?
It can write good drafts if you give it real research and a genuine reason, but it can't verify the facts or decide who should receive an email. Use it to research and draft, then edit and send each message yourself.
What's a good cold email subject line?
A good subject line plainly says what the email is about, in under 40 characters. Avoid "Re:", fake urgency and clickbait, especially because US law bans subject lines that mislead people about the content.
Should I use a cold email tool to send in bulk?
For most small businesses, the answer is no, because bulk sending to cold lists brings spam complaints and can break your email provider's rules. A few personal emails a day, sent from your own account, are safer and easier to get right.