Cold email is table stakes

Big things are happening for AI in go-to-market. I've believed for a long time that a good GTM engineer, used properly, produces growth and learning that compound. Every experiment sharpens the next one. Every list makes the data better. Every conversation teaches the system something it keeps.

Most founders aren't getting that yet, and it isn't for lack of fluency. They know AI is useful. They have a few GPTs, some prompts, a couple of workflows. They keep up with new models. What they don't have is a clear picture of what GTM engineering is, or where it fits in the company.

So it collapses into one thing: cold email.

Cold email is table stakes. Domains warm, sequences live, replies routed. It should run quietly in the background while the real work happens everywhere else.

Everything else

• Map the market. TAM modeling and segmentation built from signals, not guesses. Sometimes it is literally a map: every account you could sell to, heat-mapped by signal, so the team can see where to focus instead of arguing about it.
• Test the hypothesis. Is this segment real? Does this message land? Should we hire for this vertical, or test it first? Answered with real data in weeks, not debated for a quarter.
• Build one source of truth. Every customer and account in one place, synced to every channel, so the list for any campaign is a query and not a twelve-week ticket.
• Make reps faster. Call prep, research briefs, answers from customer data right inside Slack, and a map of who can make a warm intro.
• Run campaigns across channels. Outbound, yes. Also paid with assets worth downloading, LinkedIn, and account-based programs for marketing.
• Engineer the growth work. SEO built with AI and APIs. Referral and product experiments shipped in days.

Marketing belongs in the room

Most GTM engineering gets pitched to sales. The tech budget usually sits with marketing. Account-based marketing is really marketing's version of outbound: pick a list of companies, then reach them with ads, content, gifts, events, and email, all aimed at the same list. A GTM engineer who can build that list, prove it's the right one, and wire every channel to it speaks both languages.

Why it compounds

Cold email on its own doesn't compound. You send, they reply or they don't, and you start over. The rest does. The market model gets sharper every time a segment wins or loses. The source of truth gets richer with every campaign. Reps get faster, so they have more good conversations, which feed the model. What you learn in one channel sets up the next.

That only happens when the GTM engineer sits with revenue leaders in both sales and marketing, speaks their language, and clears the blockers that slow them down. That earns trust, and trust turns into budget.

What this letter is

It's for founders, CEOs, and revenue leaders who know AI matters and want to see what go-to-market looks like when it's done properly. I'll cover what I'm building, what compounds, and what's noise. I'll send it when I have something worth your time.

If you're trying to figure out where a GTM engineer fits in your company, reply and tell me what you sell. If you're not subscribed yet, start here.

— Joel