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Cold Email

Cold Email Proof Beats Cold Email Volume

Mark Cuban, a 5-year follow-up campaign, AI spam panic, and the saturated niches you should walk away from - here's what caught my eye this week.

Every week I monitor what cold email Twitter is talking about. Some weeks it's mostly noise. This week had some genuinely good signal buried in the usual gimmick threads. Let me show you what stood out.

When the Email Works Because the Offer Is Undeniable

@thirdmetaxView on X
Mark Cuban reveals he invested $500k in a company after a cold email without ever meeting them, they are now worth $4 billion "They said they wanted to start a space company, I'm like I don't know shit about space but I'll get you started and see what happens" "I still never met him it was all email, now I've invested a few million they're worth $4 billion" "Relativity Space they build rockets using 3-D printers, to their credit it's not like I helped them get there, these guys were just insanely smart" "I got lucky you know sometimes just making yourself available opens a lot of doors"
3432 likes · 24 replies · 624 saves

People share this story like it's a cold email copywriting lesson. It's not. Cuban didn't write back because of a great subject line or a clever opener. He wrote back because the offer was a rocket company built on 3D printers - a concept so specific and so audacious that it punched through every filter he had. The lesson is not "be available." The lesson is: the strength of your offer determines whether your email gets read or deleted. I've seen clients with technically perfect emails book zero meetings because they were pitching something forgettable. I've seen clients with rough, typo-filled emails land Fortune 500 meetings because the underlying offer was sharp. Start with the offer. Everything else is polish.

The 5-Year Follow-Up That Closed a $400M Relationship

@k1rallikView on X
> be Kate Tolo > Bosnian immigrant kid from Mackay, Queensland > fashion degree, move to NYC > work at Proenza Schouler and The North Face > 2016, age 21, read some tech guy's essay > cold email him for a job > rejected > email him every year for 5 years > finally hired in 2021 as his assistant > pitch him to publish his health data online > name it Project Blueprint > 4 years later he announces you as his girlfriend in a 20-slide Instagram post a 21 year old fashion grad cold emailed a tech millionaire for 5 years straight and now co-runs his $400M longevity empire
1344 likes · 28 replies · 519 saves

The follow-up sequence everyone ignores. I teach a 5-step follow-up system and people tell me it's "too aggressive." This person followed up once a year for five years and landed one of the most valuable relationships in the longevity space. Here's what that story is actually about: she emailed with genuine context each time. She wasn't spamming the same template. She updated the pitch as her own career grew. That's the difference between a follow-up that annoys and one that eventually converts. Most people send one email, get silence, and assume the channel is dead. The channel isn't dead. Your follow-up sequence is. If you want a structure that actually works, here's the framework I use: /followup.

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The Founder Who Dropped Out for a YC "Maybe" and Won

@stacy_muurView on X
• Be Emir • Drop out after 80 days in college because YC said "maybe" • Move to SF with no network, no degree, no safety net • Cold email into YC, get a foot in the door • Build HockeyStack from first principles, no playbook, no pedigree • Now $50M raised and a real company Not many people can do this.
416 likes · 22 replies · 32 saves

The thing that stands out here isn't the cold email. It's that he moved to SF with nothing and executed. Cold email opened the door. He walked through it. I've watched hundreds of entrepreneurs learn cold email, land meetings, and then choke on the follow-through. The email is maybe 20% of the equation. What you do in the room - or on the call - is the other 80%. The cold email got Emir a shot. The product got him $50M.

Niches You Should Avoid in Cold Email Right Now

@SeannywilsonView on X
Saturated niches I wouldn't touch with cold email in 2026: > Lawyers: their inboxes are saturated, hardest reach in B2B > Cybersecurity buyers: compliance review kills any speed > Risk and compliance buyers: same problem > Tier-1 banks: procurement gates everything > Website design agencies: no clear ICP, race to the bottom > Offshore outsourcing services: impossible to differentiate
55 likes · 11 replies · 0 saves

Solid list. Lawyers in particular - I've tested this personally across thousands of sends. Open rates look okay, reply rates are catastrophic. Their assistants screen everything, and even when you get through, the decision cycle is glacial. Cybersecurity and compliance are also dead in the water for the exact reason listed: procurement and legal review buries any momentum before it starts. I'd add one more to this list: generic "marketing agency" services targeting other agencies. No clear pain, no money, everyone's trying to close everyone else. The boring niches - HVAC distributors, commercial real estate services, industrial supply - those still convert. People aren't fighting over them. That's the point.

The Tweet That Made Everyone Nod But Said Nothing

@TundeTASHView on X
A cold email can change the trajectory of your life forever.
408 likes · 18 replies · 46 saves

True. Also true: so can a good job application, a warm introduction, and showing up consistently for five years. The problem with posts like this is that they generate motivation without generating action. People like it, feel good, and change nothing. If you believe cold email can change your life - and I genuinely do, I've watched it happen for thousands of people - then the next step is writing one. Not saving the tweet. Here's a place to start: /top5scripts.

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The PM Cold Email That Got a Reply in 15 Minutes

@omoalhajaabiolaView on X
I sent this cold email few minutes ago and it took the client less than 15 minutes to reply. This is for a PM
248 likes · 22 replies · 534 saves

534 saves on this one. People saved it more than they liked it, which tells you something - they wanted to reference it later, not just appreciate it. A 15-minute reply is almost always a function of three things: right person, right timing, right problem. The copy helps, but it's rarely the deciding factor. If you catch someone on the day they're feeling the pain your offer solves, a mediocre email still books the call. That's not an excuse to write mediocre emails - it's a reminder that targeting matters more than most people want to admit.

AI Is Killing Inbound Email - and Lazy Senders Deserve It

@GergelyOroszView on X
Inbound cold email is dying rapidly - in-part to thanks to AI. Every day I get several emails I suspect were written and sent by AI agents, and every now and then one will admit that it's all AI-generated. I block full domains. "The Screener" concept could well go mainstream
181 likes · 29 replies · 18 saves

He's not wrong that the inbox is getting worse, and he's not wrong that full-domain blocks are coming. But I want to be precise about what's actually dying here: undifferentiated AI slop is dying. Cold email that's relevant, specific, and well-targeted is not dying - it's getting a competitive advantage because the average quality of the inbox just dropped off a cliff. Every agency blasting GPT-generated templates is doing you a favor if you're willing to send something that actually requires thought. The senders who are watching their deliverability tank right now all share one thing in common: they optimized for volume and ignored offer quality. Run AI to research and personalize. Don't run AI to replace judgment.

The "Win Unicorn Clients" Thread That Buried Its Own Point

@mickeyhardyView on X
3 ways we win unicorn clients. AI flattened the service economy. Everyone now has: - copywriters - cold email systems - UGC teams - clippers - "growth agencies" - automation stacks The barrier to entry collapsed overnight. Most agencies now look identical. 1.) Taste - identify shifts early, frame narratives properly, understand internet culture 2.) Integration - vertically integrated team controlling the full GTM engine 3.) Actually being good - keep current clients insanely happy We've never relied heavily on cold outreach. Most of our business came from network effects and word of mouth.
285 likes · 88 replies · 13 saves

Points 1 through 3 are real. The framing at the end is where I push back. "We don't rely on cold outreach" is a statement that works once you have momentum - referrals compound when you have existing clients to refer you. But getting those first 5 to 10 clients? Almost always some form of outbound. I've personally talked to agency owners who are making $50K, $100K, $200K a month, and a large percentage of them bootstrapped with cold email before referrals took over. The mistake people make is treating word-of-mouth and cold outreach as competing strategies. They're sequential. Cold email fills the pipeline while you're building the reputation that eventually makes word-of-mouth sustainable.

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The "Warm Intro Only" Advice That Needs a Caveat

@euniceajimView on X
Your first investor as an African founder won't be from a cold email. It'll be from a warm intro. Focus on building relationships and the investment will follow.
428 likes · 22 replies · 0 saves

The geographic and network context here matters. For founders operating in ecosystems where warm intro culture dominates, this is accurate - not because cold email doesn't work, but because certain investor communities filter hard on social proof and referral chains before they'll take a first call. That's a targeting problem, not a cold email problem. The fix isn't to abandon outbound. It's to use cold email to build the relationships that eventually produce those warm intros - connecting with angels, advisors, and operators who are one step removed from the investors you actually want. Cold email gets you into rooms. The rooms produce intros. Nobody ever talks about that middle step.

The Vault Thread Doing What Vault Threads Do

@scaling_shieldsView on X
i put EVERY template behind my $480K/year cold email business into one doc 40 pages of copy-paste scripts - 7 subject lines that get 40-70% open rates - 7 cold email scripts (every niche) - 5 follow-up sequences - 10+ reply templates (objection handling) - warm calling scripts (7% → 68% booking rate) - spintax templates - exact instantly settings this is the doc i wouldve KILLED for before scaling to over $45k/mo like + comment "VAULT" and i'll send it over (must follow + RT for priority access)
154 likes · 180 replies · 81 saves

The engagement bait format. 180 replies, most of them saying "VAULT," and the thread does nothing to teach the person commenting anything about cold email. I'm not going to pretend these don't get engagement - they clearly do. But the people commenting "VAULT" are the same people who collect templates and never send them. If 40-70% open rates were genuinely reproducible across any niche with a copy-paste doc, everyone running cold email would be doing those numbers. They're not. Because open rates depend on deliverability, domain reputation, list quality, and timing - none of which a PDF fixes. If you want subject lines that are actually tested across real campaigns, I have a resource that actually shows the logic behind them: /subject.

The Restaurant App Scheme Circulating Right Now

@jn_jackkView on X
Cold email 1,000 restaurants per day offering to build them a ready-made app For every interested reply: Have claude vibe-code the app in 20min Sell it to each of them for $3,000 per month Make 3 sales per month and make $9,000 MRR compounding
168 likes · 32 replies · 277 saves

The math sounds clean until you actually run it. Restaurants are notoriously hard to close on software. Margins are razor thin, the owner is also the manager and the dishwasher half the time, and $3,000 a month for an app is not a conversation most restaurants are having. The vibe-coding part is real - that's genuinely something that's changed what's possible for non-technical operators. But the offer and the target are wrong here. That same AI-build approach applied to a niche with actual software budget - home services, med spas, fitness studios, legal practices - would be a different story. The cold email mechanism isn't the problem. The ICP is.

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Has Anyone Ever Bought From a Cold Email?

@Jbm_devView on X
have you ever bought something from a cold email? I haven't, which makes the strategy feel a bit insane
67 likes · 61 replies · 3 saves

Yes. Multiple times. And I've helped over 14,000 entrepreneurs generate more than 500,000 sales meetings - many of them from cold email alone. The "I've never bought from cold email" framing is a personal anecdote standing in for a data point. Most people haven't consciously registered that a purchase started with a cold email because the journey went: cold email, then a call, then a proposal, then a signature. They remember the call. They forget the email that got them on the call. Cold email doesn't close deals directly. It opens conversations. If you're measuring cold email by direct purchase conversion, you're measuring the wrong thing.

The Honest Post About Applying to 20 Companies a Day and Hearing Nothing

@pikachiuiuView on X
apply/cold dm/cold email to 15-20 companies/startups daily and still get no replies 🥀
211 likes · 38 replies · 26 saves

This gets 211 likes because it's relatable, not because the strategy is right. Sending 15-20 cold applications a day to random companies is spray-and-pray. The volume sounds impressive until you realize each message is probably generic. The fix isn't to send more. It's to send fewer, with sharper targeting and actual personalization. I've seen a client go from zero replies with 50 daily sends to consistent replies with 10 daily sends - once we tightened the ICP and rewrote the opening line. Volume is a multiplier. If what you're multiplying is a bad message, you just get more rejection faster. Check out /killercoldemails for the structural changes that actually move reply rates.

The Specific Takeaway This Week

The thread through most of what caught my eye this week is a simple one: the email is not the problem most of the time.

Mark Cuban responded because Relativity Space had an insane offer. Kate Tolo got hired because she followed up with patience and updated context. The people getting zero replies are targeting wrong niches with generic messages. The people freaking out about AI killing cold email are watching bad senders get blocked and calling it an industry trend.

The actual variable that separates campaigns that book meetings from campaigns that don't is whether the person receiving the email recognizes their own specific problem in the first two sentences. Not whether the subject line has the right emoji. Not whether you used Claude or GPT. Not whether you sent 20 a day or 1,000.

Before you touch your copy or your sending infrastructure, answer this question: does your ideal prospect feel this problem badly enough to reply to a stranger about it? If the answer is no, no cold email template in any 40-page vault is going to save you.

If the answer is yes, a solid email sent to a verified, targeted list will convert. Start there. If you need a verified list to work from, ScraperCity's B2B email database is where I'd start building it. And for the sending infrastructure side, Instantly is still the tool I recommend most for managing multi-inbox campaigns at scale.

Get the targeting right first. Everything else follows.

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