⚡Founder at https://xitter.gq/t.co/3PTWsEMoK1 - Building the future of cold email & gtm
Joined June 2009
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And Deliveryman.ai is coming for a big chunk of this market.
A heartbreaking reminder that life can change in a moment.
Adam Robinson, the entrepreneur behind Moltsets & RB2B was among the nine people killed in the Florida Learjet crash.
He was travelling with his wife, two young children, their nanny and close friends.
An entire family. Gone.
For those of us in the startup, SaaS & GTM community, this hits particularly hard. We're talking about someone who was building companies, creating products and contributing to an ecosystem many of us are part of.
We spend so much of our lives chasing the next milestone.
The next million.
The next exit.
The next business.
The next big achievement.
We postpone vacations, family time, conversations and moments with the people we love because there's always something more to accomplish.
But life doesn't operate on our timelines.
Build something meaningful. Be ambitious. Chase big goals.
But don't get so caught up building your future that you forget to live your present.
Call your parents.
Spend time with your kids.
Be there for your partner.
Make memories while you can.
Tomorrow is never guaranteed.
My deepest condolences to everyone affected by this tragedy. ❤️
Everyone's just obsessed with killing @clay @ENowoslawski 🤣
I'll keep calm & keep building deliveryman.ai 🏁
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Couldn't agree more.
SMTP is underrated.
Everyone should try deliveryman.ai
The leading infrastructure for SMTP-based cold email.
SMTP is the most underrated inbox type in cold email.
Everyone fights over Google and Outlook like it's Black Friday at Walmart.
Meanwhile the guys quietly printing money are running SMTP and laughing.
Here's what nobody tells you:
It's cheap. Stupid cheap. A fraction of what you pay for Google.
You send 10–15 cold emails per inbox per day. Way more than the 2–3 Outlook lets you get away with now.
And here's the big one:
When Microsoft has a meltdown, SMTP doesn't care.
Your own dedicated servers. Your own IPs. Nobody else's crackdown takes you down overnight. Last week while half of cold email was crying about Outlook, SMTP just kept sending.
The catch?
You have to treat it right. Proper warmup, 3–4 weeks minimum. A real HELO. Reverse DNS that actually points back. Clean lists. It rewards people who know what they're doing and punishes lazy mfers.
That's exactly why it's underrated. Most people set it up wrong, burn it in a week and decide "SMTP doesn't work."
It works. You don't.
Run it as 30% of your stack and it absorbs your volume spikes, protects your Google and Outlook inboxes, and makes your cost per send collapse.
So here's the deal.
First 10 people get 100 SMTP inboxes for $50. (Around 1K sends/day)
Dedicated IP. Full DNS setup. Done for you.
Comment "SMTP" and follow me. I'll DM you.
10 spots. When they're gone, they're gone.
We are able to bypass microsoft 365 spam filters almost 99% of the time.
It has less to do with copy, more to do with IP reputation.
Gmail’s spam filtering works at an individual inbox level. What reaches one person's inbox might land in another person's spam.
Google/Outlook AI spam filters are here. I've had to hire a full-time human copywriter and now send all our cold emails one day per week.
I know I’ve said versions of this before.
I’m saying it again because I don’t think people understand how bad the old cold email playbook is about to get.
For the last few years, we all tried to make cold email look like it came from a normal employee.
3-5 inboxes per domain.
10-25 emails per inbox.
Lookalike domains.
Spintax.
AI personalization.
Warmup networks.
Hundreds of almost-identical messages spread across thousands of accounts.
Then we lost 31,000 inboxes in a single day.
After that, our infrastructure started burning faster and faster. First it lasted a month. Then three weeks. Then two. Then one. Our infrastructure cost went up 13x because we were replacing it every week.
We were burning through hundreds of thousands of dollars in Google and Azure accounts.
At one point I was spending $50k/month on Instantly infrastructure that would burn within two days of sending emails.
Google and Outlook knew EXACTLY what we were doing.
A cold email with a CTA is obviously not a normal employee email. The more aggressively you try to disguise it, the more data you give the filters on what cold email looks like.
AI-written copy is becoming another signal.
New models like Opus, Fable and Sol are now watermarked, by EU law, in ways Google/Outlook can track.
So I hired a human copywriter.
It sucks because AI was able to write HUNDREDS of variations of copy the second we onboarded a client. Now since we're only sending one email a week, a human who can get us 80% to message-market-fit without being detected is invaluable.
We're already seeing it work at insane scale.
For one of our clients, the HTML version is getting 30% more meetings than the plain-text version we used when optimizing for replies. They booked 92 meetings from roughly 293,000 emails in 90 days, with zero positive replies.
Maybe I’ll be proven wrong about the watermark stuff.
I don’t think I’ll be proven wrong about this:
The agencies that keep buying more inboxes, adding more spintax, and trying harder to look human are playing a game Google and Outlook already understand.
Read this before you buy 20 domains for cold email.
Most founders do one of two things:
burn their main domain or buy a pile of lookalike domains and pray.
Here's the setup we run instead:
1 domain you already own
→ 3 subdomains
→ 5 mailboxes on each
→ 15 inboxes
Then:
• Warm up all 15 before a single campaign goes out
• Cap the domain at 100 sends a day
• Rotate every campaign across all 15 inboxes automatically
That's ~7 emails per inbox per day. To a spam filter, that's indistinguishable from a person doing their job.
Why it holds up:
One inbox gets flagged? The other 14 keep sending.
Volume this low per inbox doesn't look like a tool at all.
Send this to the founder who's about to buy 20 domains.
Link to setup the infra below 👇🏻
The old way of setting up cold email infrastructure is broken.
Buy a domain.
Buy 3-5 Google Workspace accounts.
Configure DNS.
Set up warmup.
Connect everything to your sending tool.
Repeat.
We've built a completely different way to do this.
Here's how cold email infrastructure should work in 2026:
1 domain. 3 subdomains. 15 mailboxes. One system.
Here's what happens when you bring a domain to Deliveryman:
- Add your domain to Deliveryman.
We take care of the infrastructure setup from here.
- We create 3 sending subdomains
Your domain gets structured into 3 separate sending branches.
- Each subdomain gets its own email authentication & sending configuration.
- We create 15 mailboxes (at no charge)
5 mailboxes on each subdomain.
That's 15 sending accounts, organised across 3 subdomains.
We warm up everything
All 3 subdomains & all 15 mailboxes go through our structured warmup process.
No manually configuring accounts one by one.
Start your campaigns & Deliveryman automatically rotates sending across your mailboxes.
You don't have to manually distribute campaigns across 15 accounts.
You don't have to keep switching between mailboxes.
You don't have to manage the infrastructure yourself.
One domain goes in. An entire cold email sending infrastructure comes out.
That's the new way to build cold email infrastructure.
That's Deliveryman.
Everyone who got banned by using Azure/Outlook tenants and inboxes should checkout deliveryman.ai
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Introducing Unlimited Email Verification
No credit-based plans.
No fair usage policy crap.
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Not some vibe coded crap put together.
Check it out > deliveryman.ai
OpenAI accidentally published their entire demo day summary before it finished
openai.com/index/devday-2026…
