For SaaS founders in NL & UK

Book More Calls.
We'll Find Your Prospects and Email Them.

We combine AI research agents + human-written outreach to fill your pipeline with qualified leads — no fluff.

Free strategy call · No commitment · 15 minutes

50–200 Prospects/Week

Highly targeted B2B leads built from your ideal customer profile — verified emails, real decision-makers.

Personalized Cold Email Sequences

Multi-step email sequences written by humans, personalised at scale. We find triggers, not just templates.

Replies Routed to Your Inbox

All positive replies land straight in your inbox. You focus on selling — we handle the top of the funnel.

How it works

From scratch to booked calls in days

1

Audit & Profile

We analyse your product, ICP, and competitors to build a precise targeting framework.

2

AI Research Sprint

Our AI agents find and enrich 50–200 real decision-makers per week, with verified emails.

3

Human-Written Outreach

Our copywriters craft personalised sequences using real triggers — not generic templates.

4

You Handle Replies

All replies land in your inbox. Book the call, close the deal — we keep the funnel full.

Social proof

Founders love what they get

We're growing — here's what early clients say.

★★★★★
"OutboundOS filled our pipeline in week one. We booked 6 demos in the first 10 days — all from cold outreach they ran for us."
MH
Marten H.
Founder, B2B SaaS — Amsterdam
★★★★★
"The personalization is real — not just first-name templates. Our open rates are 40%+ and we're getting real replies from VPs."
SK
Sarah K.
CRO, Series A Startup — London
★★★★★
"I was skeptical. Then they delivered 120 leads with 38% email open rate in the first month. Worth every euro."
JV
Jeroen V.
CEO, Fintech — Rotterdam

The numbers from our first outbound campaigns

117
Emails delivered in 24h
12%
Avg reply rate on well-targeted cold email
3–4
Discovery calls booked per 100 emails

Who we're built for

✅
SaaS founders in NL & UK Series A or earlier, 5–100 employees, actively hiring sales
✅
You've tried cold outreach You know it works — but you couldn't get it running consistently
✅
You need leads, not just data Not a list — you want booked calls with decision-makers
✅
Budget of €1k–€4k/month Right-sized for a team that can't afford a full sales function yet

We're not for you if: you have an inbound-only strategy, you're pre-revenue, or you're not actually ready to take sales calls.

Ready to fill your pipeline?

Book a free 15-minute strategy call. We'll tell you exactly how many qualified leads we can deliver for you — and how fast.