Before you write anything
Most failed sequences fail before the first word, on the list rather than the copy.
A sequence sent to people who do not have the problem cannot be rescued by better writing. If your reply rate is near zero, rewriting the subject line is almost never the fix; narrowing the list usually is.
The test for a list
Can you write one sentence that is true of everyone on it and specific enough to matter? "Operations leads at logistics firms with 20 to 100 staff who still schedule by spreadsheet" passes. "Decision makers in tech" does not, and no copy will save it.
Three things to settle first. Who exactly, and what breaks for them. What proof you have that is concrete rather than adjectival. What the smallest possible next step is, usually a 15-minute conversation and occasionally something even smaller.
What each email should do
Each message has one job. Repeating the same job in different words is what makes a sequence feel like pestering rather than persistence.
Email one: relevance
One sentence proving you understand their specific situation, one sentence on the problem, one question. Under 80 words.
Do not pitch here. The only goal is to establish that this is not a blast, which the reader decides within about four seconds.
Day 1Under 80 wordsEmail two: proof
A concrete example of someone like them, what changed, and roughly how long it took. Named if you have permission, described precisely if not.
Specifics travel. "A 30-person logistics team cut their scheduling admin from a day a week to about an hour" earns attention that "we help teams save time" never will.
Day 3One example, preciseEmail three: a smaller ask
If a meeting is too big a commitment, offer something smaller: a two-line answer to a question, a short written breakdown, a template.
This also reframes the exchange. You are now offering rather than requesting, and a surprising number of replies come from this message rather than the first two.
Day 7Give, do not askEmail four: the different angle
Same person, different problem. If the first angle was time cost, try risk, or growth, or what happens when a key person is away.
People ignore messages about problems they do not have. Sometimes the mismatch is your framing rather than their interest.
Day 12OptionalEmail five: the close
Short, final, no ask. Tell them you are stopping and leave the door open.
Reliably one of the better-performing messages in any sequence, because it removes the obligation to reply. It only works once, and only if you stop.
Day 18Then stop
Copy rules that matter
Subject lines: plain, lowercase, three to five words. Something that looks like an email a colleague would send. Anything that looks like marketing gets filtered by the reader before it gets filtered by anything else.
First line is never about you. "I'm reaching out because we help companies like yours" is the single most-deleted opening in B2B email. Open with them.
One idea per email. Two ideas halve the chance of a reply, because the reader now has to decide which one to respond to.
Make the reply one line long. "Worth a conversation, yes or no?" gets answered. "Let me know your thoughts on the attached" does not.
Cut every adjective you can. "Powerful", "seamless", "innovative" and "cutting-edge" carry no information and signal a template. Numbers and nouns survive; adjectives do not.
Write it as one person to another. Read it aloud before sending. If it does not sound like something you would say, it will not read like something a person wrote. This is also the fix when AI-drafted outreach sounds generic: the model gives you structure, and you supply the specifics that only you know.
Deliverability decides everything
The best sequence in the world is worthless in a spam folder, and this is the part most teams ignore until their reply rate collapses.
Send from a separate domain. A lookalike of your primary, so that a reputation problem cannot take down the address your invoices and customer conversations depend on.
Warm it up. Weeks of small, gradually increasing volume before any real sending. New domains sending hundreds of emails on day one land in spam almost by definition.
Keep daily volume low per mailbox. Tens, not hundreds. If the maths of your plan requires more, the problem is the plan.
Authenticate properly. SPF, DKIM and DMARC records configured before you send anything. This is a one-hour job that determines whether the other 40 hours were wasted.
Watch bounces and complaints. Both damage sender reputation quickly, and a list that bounces heavily is telling you it is stale before it tells you anything else.
Make unsubscribing easy. Legally required in many jurisdictions, and practically better than a complaint, which costs you far more.
What to measure
Open rate has become close to meaningless, because privacy features in mail clients pre-fetch images and inflate it. Track these instead:
| Metric | What it tells you |
|---|---|
| Reply rate | The only number that reflects whether the sequence works |
| Positive reply rate | Separates interest from polite refusals |
| Meetings booked | The actual outcome |
| Bounce rate | List quality, and an early warning on deliverability |
| Unsubscribes and complaints | Whether targeting is wrong, not just the copy |
Change one variable at a time and give it a few hundred sends before drawing conclusions. Most teams change the copy, the list, and the timing simultaneously, then cannot tell which change mattered.
Once someone replies, the sequence stops and the actual work starts. That handoff is where most of the value leaks: a strong reply followed by a slow, generic response wastes everything the sequence earned. Our guides to following up without being annoying and what to do when a prospect goes silent cover what happens next, and Kin runs the sequences against the same records your pipeline and meeting notes live on, so the reply lands on a contact with context rather than in a separate outreach tool.
Frequently asked questions
- How many emails should a cold sequence have?
- Four or five, spread over two to three weeks. Beyond that you are not persuading anyone, you are training them to ignore your address, and long sequences damage the sender reputation that decides whether future emails arrive at all.
- How long should a cold email be?
- Under 120 words, and ideally under 80. Cold emails are read on a phone between other things. Length signals effort to the writer and signals work to the reader, and only one of those two opinions matters.
- Does personalisation actually work?
- Specific relevance works. Inserting a first name and a company name does not, and everyone recognises the pattern. One sentence proving you understand their particular situation outperforms any amount of merge-field decoration.
- What is a good reply rate for cold email?
- Reply rate is the number worth tracking, not open rate, and it varies enormously by list quality and market. Track your own baseline over a few hundred sends and improve against it rather than chasing a benchmark from someone else's audience.
- Should you use a separate domain for cold outreach?
- Yes. Send from a lookalike domain rather than your primary one, so a deliverability problem cannot damage the address your customers and invoices depend on. Warm it up gradually before sending volume.
- Is cold email legal?
- It depends on jurisdiction and it is worth checking rather than assuming. Rules differ substantially between the US, the EU and the UK, and B2B exemptions are narrower than most senders believe. Get advice for the markets you send into.
