Skip to content
zenstack

How to Write a Cold Email: A 4-Part Formula With Examples

How to write a cold email that gets replies: a 4-part structure, a fill-in template, before-and-after B2B examples and a checklist to run before you hit send.

By the Zenstack team · · 8 min read

To write a cold email that gets replies, open with something specific about the prospect, connect it to a problem they probably have, say in one sentence how you help, and finish with one easy question. Keep it short, plain and about them. Below is how to write a cold email step by step, a template you can fill in, three before-and-after examples and a checklist to run before anything goes out.

What a cold email has to do

A cold email is not a sales page. Its only job is to get a reply from the right person, ideally a reply that leads to a call. Everything that does not serve that job can go.

That matters because replies are scarce. Hunter's State of Cold Email 2025, based on 11 million cold emails sent in 2024, puts the average campaign reply rate at 4.1%. Instantly's cold email benchmark, covering its platform in 2025, reports an average of 3.43%, with top performers above 10%. The gap between average and top is mostly targeting and writing, which is the part you control.

The 4-part cold email structure

Almost every cold email that works follows the same shape:

Part What it does Length Example
1. First line Shows you looked at them specifically 1 sentence "Saw you're hiring three SDRs in Austin."
2. Problem Names the likely pain behind that fact 1–2 sentences "Ramping three at once usually means your AEs spend Q1 coaching instead of closing."
3. How you help One concrete outcome, no feature list 1 sentence "We help teams like yours add ramped reps without local hiring."
4. Question An easy, low-commitment next step 1 sentence "Is hiring speed or ramp time the bigger headache right now?"

Four or five sentences in total. If you need more than that to explain why you are writing, the targeting is probably too broad.

1. Write a first line that could only go to them

The first line doubles as the preview text in most inboxes, so it decides whether the email gets read. Good first lines come from a real fact:

  • A job post ("Noticed the open RevOps role on your careers page.")
  • A change ("Congrats on the move to Head of Growth at [company].")
  • Something they made ("Your post on cutting CAC with in-house creative was useful.")
  • Their stack or setup ("Looks like you moved your checkout to Shopify Plus.")

Bad first lines are about you ("My name is…", "I'm reaching out because…") or are flattery with no link to anything ("Love what you're doing at [company]!"). The test: could this sentence be sent to 500 other people unchanged? If yes, rewrite it.

2. Name the problem, not your product

The second part turns your observation into a reason to talk. Describe the problem the way the prospect would describe it to a colleague, not in your marketing language. "Hiring three reps at once usually means your AEs end up training instead of selling" lands. "Our end-to-end talent platform streamlines hiring" does not.

If you are not sure which problem matters to them, say so and ask. Admitting a guess is more believable than pretending to know their business.

3. Say how you help in one sentence

One outcome, one sentence. Skip feature lists, awards and your founding story. If you have a relevant proof point you can stand behind, such as a similar customer, add it here in a few words. Never invent results; a prospect who checks and finds nothing will not trust anything else you say.

4. Ask one easy question

"Do you have 30 minutes next Tuesday?" asks a stranger for a meeting before they care. Lower the bar instead:

  • "Is this a priority this quarter, or later in the year?"
  • "Who owns [area] at [company]?"
  • "Worth sending over a two-minute example?"
  • "Is [problem] something you're seeing too?"

A question that can be answered in one line gets more replies, and even a "not now" tells you when to come back. Our guide on how to respond to cold email replies covers what to send back for each type of answer.

How long should a cold email be?

Short, but not robotic. Instantly's benchmark found that its best-performing campaigns kept emails under 80 words. Hunter's data is more cautious: it found almost no correlation between word count and reply rate, and noted that 40 to 60 words in plain text is what most senders already do.

The honest reading is that length is not magic, relevance is. Short emails win because they force you to cut everything that is not about the prospect. A practical target for a first email is 50 to 90 words, readable on a phone without scrolling. Plain text, no images, at most one link, and no attachments on a first touch.

Cold email template you can copy

Replace every bracket with a real detail. If you cannot fill a bracket for a prospect, they probably do not belong on the list yet.

Hi [first name],

[Specific observation about them or their company].

[Problem that observation usually causes, in their words].

We help [type of company] [one concrete outcome]. [Optional: short proof, such as a similar customer].

[One easy question]?

[Your name] [Title, company]

Pair it with a short, honest subject line. Our list of cold email subject lines has 25 examples sorted by situation.

Cold email examples: before and after

Example 1: a staffing offer to a SaaS founder

Before (all about the sender):

Hi Sarah, my name is Tom and I'm the founder of [agency]. We are a leading provider of world-class sales talent with years of experience helping companies of all sizes grow their revenue. Our proven process finds top-tier reps who can hit the ground running. We'd love to set up a 30-minute call to walk you through our services and see if there's a fit…

After (under 60 words, all about her):

Hi Sarah,

Saw you have two SDR roles open on your careers page, both in-office.

Teams at your stage often find that local SDR hiring takes months and the AE team ends up covering prospecting meanwhile.

We place full-time remote SDRs who work only for one company, in its hours.

Is filling those seats a priority this quarter?

Tom

Example 2: paid media help for an ecommerce brand

Hi Jordan,

Noticed your Meta ads are running the same three creatives they were in September.

That's often when results flatten, because the audience has seen them too often and the account has nothing new to test.

We set up brands with a full-time media buyer who launches new creative tests every week.

Is ad fatigue something you're seeing, or is performance holding up?

Alex

Example 3: asking for the right person

Hi Priya,

Quick one: who looks after outbound tooling at [company]? I have an idea about routing your inbound demo requests faster, and I'd rather send it to the right person than guess.

Thanks, Sam

The third example is useful when you know the company fits but not who owns the problem. It is short, honest and easy to forward.

Common cold email mistakes

  • Opening with yourself. Your name is already in the "from" line.
  • Fake personalisation. "I saw your LinkedIn and was impressed" is a merge field pretending to be research.
  • Three asks in one email. Pick one question.
  • Links, images and tracking everywhere. They add little to a first email and can hurt deliverability.
  • Writing for everyone. One email for a whole list of "marketing leaders" will read like one.
  • Hiding the opt-out. In the US, the FTC's CAN-SPAM guide requires a clear way to opt out and a valid postal address in commercial email, including B2B. Check the rules in each country you email into. This is general information, not legal advice.

If a well-written email still gets no replies at all, check that it is reaching the inbox. Our guide on why cold emails go to spam walks through the checks in order.

Cold email checklist before you hit send

Run every first email through this list:

  1. The first line is specific to this prospect and could not go to 500 others.
  2. The problem is written in the prospect's words, not yours.
  3. How you help fits in one sentence, with no feature list.
  4. There is exactly one question, and it can be answered in one line.
  5. The body is roughly 50 to 90 words and reads well on a phone.
  6. Plain text, at most one link, no attachments.
  7. Every claim and proof point is true and checkable.
  8. There is a working opt-out, and your sender details are accurate.
  9. Two or three follow-ups are written, each with a new angle.

Point 9 matters because the first email is only the start. Most sequences need a few more touches, and our guide to cold email follow-ups covers timing and four templates.

Better cold emails start before the writing

The first line is the hardest part of a cold email, and it is a research problem, not a copywriting one. If your list is only names and job titles, every email ends up generic. Build the list with a buying signal for each account first; our guide on how to build a B2B prospect list shows which columns to collect so the first line almost writes itself.

Getting someone to write and send them every day

Writing good cold emails means researching every account before you write, every day, plus handling replies and follow-ups. That is rarely sustainable for a founder. A dedicated remote SDR through Zenstack does this full-time, only for you, in your hours and inside your sending tool: researching accounts, writing first lines, handling replies and booking meetings. If you want the research automated, a GTM engineer can pull signals like job posts and funding into your CRM so every email starts with a real fact.

Rates start at $12 an hour, about $1,920 a month for a full-time hire, with recruiting, contracts and payroll handled by us. See pricing to plan your outbound team.

Frequently asked questions

What is the best opening line for a cold email?

One that is specific to the prospect and connects to the problem you solve, such as a job post, a recent change or something they published. Avoid opening with your own name or generic praise.

How do you start a cold email without sounding salesy?

Start with an observation about them instead of a statement about you, then ask a genuine question. Plain language and a low-pressure ask read as a note from a person, not a pitch.

Should a cold email include a link or attachment?

Keep the first email plain text with no attachments and at most one link. Save case studies and decks for after the prospect replies and asks for them.

Is it okay to use a cold email template?

Yes for the structure, no for the first line. Reuse the shape of the email, but write the opening and the problem for each prospect or segment so it does not read like a mass send.

What should the call to action be in a cold email?

One easy question, such as whether the topic is a priority this quarter or who owns it. Asking for a 30-minute meeting in the first email is a big request from a stranger.

Tell us the role. We'll bring the people.

In 30 minutes we cover your hours, tools and budget. You meet vetted candidates within 48 hours.