Learn / Email copy
21 cold email tips that book more calls
We send over 2 million cold emails a month and booked more than 3,000 sales calls for clients in the past year, and none of it came from one clever trick. These 21 cold email tips are small fixes. Most of them are worth close to nothing on their own, which is exactly why people skip them. Run all 21 on the same campaign and they compound into more replies and more booked calls.
So take the whole list, not your three favorites. Every fix below is written out in order, what to change and why it works, and the video covers the same ground if you would rather watch it.
Infrastructure and lists, before you write a word
Six of the 21 happen before any copy exists. Cheaper infrastructure and a more precise list move results more than any sentence you could rewrite, though a cheap domain still lands in spam if the rest of the setup is wrong, which is its own problem entirely.
- Buy .info sending domains instead of .com. A .com runs about $11 and a .info about $3. A sender doing 10,000 emails a month needs around 20 domains, so the same infrastructure costs $220 or $60. The performance gap is real, and it is nowhere near the price gap.
- Delete the industry filters. Apollo sorts companies the way Apollo categorizes them, not the way your buyer describes themselves, so marketing and advertising hands you billboard placement and promotional product companies. Generate keyword variations off your ideal buyer with AI and stack those in the keyword field instead.
- Stop paying the database directly for leads. Scraper tools sell the same records for a fraction of the price, and the enterprise data is mostly stale anyway. A lower cost per lead buys a bigger list on the same budget, which is more sends and more meetings out of money you were already spending.
- Build lookalike lists off your best clients. Drop the URLs of your strongest case studies into a lookalike tool and let it find companies that actually resemble them, rather than spending a week guessing filters. You already know how to get results in that space, so the road map for the next one is written.
- Run your case studies through a matrix. Paste every company you have gotten real results for into an LLM and have it group them by industry and market segment. Then work through those segments in order instead of guessing which industry deserves the first campaign.
- Waterfall the contacts with no email. Export 60,000 people from a database and you will often find only 30,000 have an address attached. Push the rest into Clay, run them through providers in priority order, and stop the run the moment one hits. Contacts whose data is harder to find get far less outreach.
No single fix on this list moves the number. All 21 running at once does.
The email itself, subject line through PS
Eight fixes at the line level. None of them needs a Clay flow or a rewrite of your whole campaign, and the mechanics of building a message from scratch are in how to write a cold email.
- Two or three lowercase words in the subject line. Something like {first name} thoughts, or question about {topic}. Say enough to open a loop and nothing more, because a subject line like free creative ad strategy lets anyone who has decided they do not care about ads delete you unread.
- Write the preview text on purpose. The subject line and the preview are read together as one unit, so the first five or six words of your email are doing real work whether you chose them or not. Use them for a second layer of curiosity instead of letting your greeting spill in there.
- Lead with the offer, not the pain point. Most emails paint the picture first and reach the value in line two, and with cold traffic you are lucky if anyone reads that far. Put the offer in front of their face, then explain why it is relevant underneath it.
- Drop the company name variable. Nobody says thought this would be relevant for Apple Inc. out loud, and an all-caps LLC dropped mid sentence tells the reader a machine wrote it. Replace the whole variable with the word you.
- Swap every CTA to would that be worth sharing more. Hopping on a call and a quick chat both name the commitment up front. Worth sharing more could mean an email, a video, or a call, so the reader agrees to nothing and replies anyway.
- Move the social proof to the PS. One outcome-based line, formatted as a client going from a bad result to a good one using this exact process. Proof is discounted currency now, so it earns a spot at the bottom of a strong offer, never line one.
- Open on what they are losing, not what they could gain. Losing something already in hand is more compelling than gaining something they have not decided they want. Someone whose ad spend is leaking will patch that hole long before they buy a brand new bucket.
- Explain the offer when it sounds too good to be true.A strong offer trips people's skepticism, and skepticism you never address reads as a scam. Say why you can do it: a formula that only works for one narrow type of client, or a free deliverable you use to screen who you take on.
The five swaps side by side, using a free UGC creative offer as the worked example:
| Element | The default | The swap |
|---|---|---|
| Subject line | free creative ad strategy | fyi {first name} |
| Opening line | Hey {first name}, notice you're running static ads on Meta, so thought I'd reach out | {first name}, if we could ideate, script, edit, and record one free UGC ad creative for you |
| Personalization | thought this would be relevant for {company} Inc. | thought this would be relevant to you |
| CTA | worth a quick chat? | would that be worth sharing more? |
| Follow-up | just following up on the above | interested in a free UGC ad creative? |
Testing, so a campaign teaches you something
- Change ONE variable per version. Change the subject line, the hook, the body, and the CTA at once and a winning campaign tells you nothing you can reuse. Solve the offer first, then how the offer is positioned, then the CTA that delivers it.
- Test data sources before you test copy. I recently sent the same offer and the same email to five segments from five sources, and three outperformed the rest by almost 10x. Not one word of copy changed. Where the data came from did.
Follow-up, two rules
The full sequence structure, timing and all, is in the follow-up system. These two rules sit inside whatever sequence you run.
- Make the second follow-up a video offer. Ask whether you should send a two-minute Loom showing exactly how it works. There is nothing to commit to, so it is hard to refuse, and a well-scripted video does the selling for you. Expect a lot of marketing-qualified replies, and a nurture flow that can hold them.
- Write every follow-up so it stands alone. Most recipients never read email one, so just circling back on my last email means nothing to them and quietly announces they already ignored you once. Send a fresh email, new subject line, with the core value restated short.
Speed to lead, where the calls actually get booked
The last three are not email at all, and they are the difference between a pile of interested replies and a full calendar.
- Answer interested replies within 5 minutes. Push replies to Slack with a webhook and enrich the mobile number on the way through. They are at their computer right now, thinking about you. Fifteen minutes later they are making lunch and the window has closed.
- Call the reply, do not email it. They said yes once, so use the momentum. Scheduling over email kills the energy, and by the next day most people have moved on. Call, put a voice to the name, handle the first objection, offer two times. Done consistently this takes booking rates from 20 or 30% to 40 or 50%.
- Put qualifiers in front of the booking. Not every positive reply is a fit, and every unqualified call is an hour you do not get back. Ask about revenue, deal size, and whether the company is real and established. Treat the questions as a friction dial: more of them when replies outnumber your calendar, fewer when the calendar is empty.
Every one of these sits inside a bigger system, and if you want that system in order, from infrastructure through the first booked call, that is what the complete cold email guide lays out. Tip 1 also assumes you already follow Google's bulk sender rules, which are not optional.
tl;dr: not one of these 21 wins on its own. Stack all of them onto the same campaign and the compounding shows up in booked calls, not in how good the reply rate feels.
FAQ
What are the best cold email tips for getting more replies?
Four line-level changes carry most of it: lead with the offer instead of the pain point, cut the subject line to two or three lowercase words, delete the company name variable and write you instead, and replace the call ask with would that be worth sharing more. Each one lowers the effort of saying yes, and none of them costs anything to test.
Do .info domains work as well as .com for cold email?
Close enough that price decides it. A .com sending domain runs about $11 and a .info about $3, and a sender doing 10,000 emails a month needs roughly 20 domains, so the same infrastructure costs $220 or $60. There is a performance difference, but it is nowhere near a 3x gap, and warmup discipline matters far more than the extension.
How fast should you respond to a cold email reply?
Within 5 minutes, by phone if you can get the mobile number. Someone who just replied is sitting at their computer with your email on screen, and a call at that moment gets a time booked in one conversation. Wait 15 minutes and they are making lunch. Responding fast moves booked calls further than any copy change does.
Should you test cold email copy or your lead list first?
The list, assuming you already believe in the offer. Sending one identical email and offer to five segments from five different data sources produced an almost 10x spread between the best three and the rest, with zero copy changes. Prove where the data comes from before spending weeks writing variations of a message.
How many follow-ups should a cold email sequence have?
Three at most. Across our own sending, 80 to 90% of positive replies landed between emails one and three, and every email past the third raises the odds of a spam complaint. Write each one so it stands alone, because most people never read the first, and circling back only tells them they already ignored you.
If you would rather have all 21 running without building any of it, that is what we do: infrastructure, lists, copy, and someone on the replies inside 5 minutes. Every training we have published, grouped by topic, is on the trainings hub, and the full video for this one is on YouTube.
PS - the two nobody implements are 19 and 20. Answering a reply in 5 minutes with a phone call is unglamorous, slightly uncomfortable, and worth more than the other 19 put together.