Kacper Borzymiński, GTM Engineer & Outbound Lead
Snapshot
About three years in marketing: SEO from February 2024, cold email and go-to-market (GTM) engineering since autumn 2025. Mostly cold email, with LinkedIn beside it. I build the whole outbound process: who to write to, why now, what to say, and the plumbing that gets the email into the inbox at all.
What I do
I build a process for reaching the companies that actually fit your ideal customer profile (ICP). Signal first: which ads a company runs, who it is hiring, whether the decision-maker changed. Then an email that picks up on that signal.
Outbound from zero
List, signals, sequences and reply handling in one repeatable process.
Signal-based emails
Written around something that is happening at the recipient's company.
What it means for you: They see the email is about their company, not a template.
Sending infrastructure
Domains, mailboxes, warm-up and reputation monitoring.
What it means for you: Your emails actually arrive.
AI automation with quality control
What it means for you: The system does the repetitive steps, and a human checks what matters.
Learning new tools fast
When I use which channel
Cold email
When the offer is clear and we know who we are writing to.
LinkedIn
When the decision-maker is active there and we want a second touchpoint beside email.
Clay and enrichment
When the market is wide and needs narrowing to companies with a real signal.
Who calls me
Industries
Hot take
Tools
Claude Code
I build whole systems on it.
Clay
Narrowing the market and enrichment.
Instantly
Sending and warm-up.
Findymail
Email verification.
Supabase
Campaign data.
Slack
Where I talk to the agents.
ClickUp
Automations.
treg
Enrichment.
For Zero Fluff I built a GTM cockpit: constant lead monitoring that catches sales signals.
Lessons
The costliest mistake
Do not rename the senders on your mailboxes more than once. I bought ready-made mailboxes with other people's names and then renamed them to mine. We lost some leads: nobody knew who had received which version, and the same lead got messages from several different "people" on one mailbox.
Favourite metric
Sales opportunities per 1,000 emails sent.
Most overrated
Open rate.
Quick tip
Before you write a cold email, find one specific thing from the last 30 days that shows the recipient has a problem, and start with it. Then say how you can solve it.
Off the clock
- I love travelling around Asia.
- I go to the gym a few times a week.
- I spend hours exploring what Claude Code can do. Yes, also after work.
FAQ
What does GTM mean here?
Go-to-market: the process of finding the companies that fit your offer and reaching them. Not Google Tag Manager.
Which channels do you use?
Mostly cold email, with LinkedIn as a second touchpoint where the decision-maker is active.
What is a signal?
Something that shows a company may need you now: the ads it runs, who it is hiring, a new decision-maker.
Next step.
Bring your offer and a description of your best client. Book a call with Kacper.