B2B prospecting data, custom-built

Find the companies ready to buy from you.

One month of consulting uncovers your buying signal. Then your own dead-simple tool turns it into decision-makers with verified emails, every time you click run.

Book an intro call → Why Mason

Companies we've worked with

We spent our careers running B2B lead gen and demand gen for them, before building Mason.

€36.8B
Annual revenue
$83B
Annual revenue
$4.8B
Annual revenue
$35M
Raised
$21.6M
Raised

and 50+ midsized and enterprise companies

Why we built Mason

The teams that win aren't the ones with the most data. They're the ones who know exactly who to go after.

We spent our careers running outbound, and kept seeing the same thing: two companies with the exact same tools getting completely different results. The difference was never the software. It was knowing exactly who to go after.

The tools kept getting more powerful, and they all share one flaw. They hand you the software and leave you to find the answer. Filters in, five hundred companies out, and no reason why any of them should buy.

So we flipped it. Mason finds the answer first: the provable events that show up right before a company buys from you. Then we build your tool around them.

One signal, start to finish
SignalLate paying suppliers fires
↓
Matches12 companies this month, the filing attached
↓
People3 decision-makers each, emails verified
↓
RunPushed to your sequencer or CRM

A signal is one event, with your ICP filtered in. "Late paying their suppliers." "Just hired their first AP clerk." "New CFO, ninety days in."

So Mason is two things.

1

The consulting

Month one. We reconstruct your last 20 closed deals, yours and your competitors', and find the 10 to 15 events that happen right before money moves. Then we shortlist the ones worth building, with you.

Month one
2

The tool

Your best 4 to 10 signals, live in a simple tool that is yours, white-labeled. One login. One button. Companies, decision-makers, verified emails, and the evidence one click away.

Yours, white-labeled

How we find your signal

Apollo and Clay hand you the software, then leave you on your own to find the answer. We find the answer first, then build the tool around it. Here is how:

01 Find your signal The provable event that shows up right before a company becomes your customer. See how we do it
Step 1Reconstruct your wins

Your last five or six closed deals. What was changing inside each buyer the moment they decided.

Step 2Mine competitor wins

Their new customers are easy to spot. Together, the pattern shows up: three or four signals.

Step 3Find them at scale

We hunt down the sources where your signal actually lives, then pull the data ourselves.

Step 4Validate twice

Cross-checked across sources, then reviewed with you, round by round, until the list is clean.

That is what the first month buys: your signal, proven, before a single tool is built.

02 Get the data where it lives Registries, filings, news, reviews. Sources you cannot buy off the shelf. See the sources

Registries & government filings

UK Companies HousePayment-practice filingsIndia MCA registrySEC EDGAR 10-KsEarnings transcripts

Hiring & people moves

LinkedIn jobsCareer pagesJob boardsLeadership announcements

News & the open web

Press releasesAnnual reportsTrade newsReview sites

Pulled through official APIs and our own scrapers, source by source. If it can be found on the internet, our engine finds it.

03 Build and hand over Three calls, about three hours of your time in total. Then it is yours. See the handover
Hour 1Onboarding

Your ICP, your closed deals, and access. We take it from there.

Hour 2The findings

We walk you through the events we found and shortlist the signals worth building.

Hour 3Handover

Your tool, live and white-labeled. Your brand on it, your team trained on the one button.

That is the whole lift on your side. Everything between the calls is on us.

04 Deliver the buyers Decision-makers with verified email and mobile, each with the reason they are on the list. See what lands

This is where you get one step closer to revenue.

  • Decision-makers mapped for every company that fires a signal, up to three per company.
  • Emails and mobiles verified before they reach you, so bounces are prevented, not apologized for.
  • The reason each company is on the list travels with it: the actual filing, the actual posting. Check the evidence yourself.
  • Pushed straight to your sequencer or CRM, with replies tracked in Slack.

This is the tool.

A client's live engine. One login. One button.

Welcome back, Rob

Your always-on pipeline of in-market UK companies, updated as public data lands.
7 days30 daysQTD
Companies in pipeline▲ 8 this week
32
In-market right now▲ 3
10
Tier 1 · hot
Decision-makers mapped▲ 14 this week
64
Meetings booked▲ 3
7
This month
Signal performanceFour live signals · last 7 days Manage →
SignalMatchesNew7-dayStatus
Manual AP · late payers12+3 Live
Hiring the AP team8+2 Live
New CFO or Finance Director6+2 Live
Mid ERP migration (S/4HANA)6+1 Live
Discovery funnelHow the pipeline narrows, this quarter
Filings & records scanned111,192
UK companies identified10,147
Qualified · ICP + product-gap790
In your pipeline32
Decision-makers mapped64

Every company carries the reason it is on the list, and the source behind it. The actual filing, the actual posting. Check the evidence yourself. No GTM engineer, no learning curve: anyone on your team can run it.

From a recent case study

The founder believed one thing. The deals said another.

An accounts payable software company came in sure their buyer was the mid-sized finance team. We reconstructed a year of closed deals, theirs and three of their competitors', and 70 to 80 percent of the buyers shared one trait nobody was tracking: they were slow to pay their suppliers. Public filings record exactly that. Their engine now runs on it.

Read the full case study →
70–80%

of closed deals, across the client and three competitors, shared the one signal nobody was tracking

Source: UK payment-practice filings Signal: Manual AP · late payers
Getting started

Three hours of your time, end to end.

One hour of onboarding. One hour reviewing what we found. One hour of handover. After that, you click run. Book the first hour.

Book an intro call →
Case studies · Live systems

Three engines, three industries.

Every engine starts the same way: find the signal, then build around it. Pick a client to see the story, the signals, and what fires them.

The backbone, built once per client Detect → Classify → Enrich → People → Message → Push Every signal on this page runs through the same six stages.
ClientGlobal expansion services
What they sellIndia operations, end to end
Scope8 signals mapped, 3 shown
StatusLive system
The situation

Our client helps foreign companies set up India operations: talent, workspace, compliance, payroll, end to end. Their offer is uniquely useful at very specific moments in a company's life.

Their buyers don't wake up wanting an India partner. They become buyers on a specific day: the day they incorporate an entity, the week they post their first India role, the quarter they announce a GCC, the day they hire an Indian-origin VP.

We mapped eight of those moments, then built one engine that watches all of them. Three of the eight, in depth:

The signals
01

Senior India ops roles

Hiring · LinkedIn jobs · Apify · Claude classifier · Apollo

Foreign companies posting senior India ops roles, last 7 days.

Why it fires. The new India lead is being hired, and the first 90 days get designed now. A US healthcare company posts "India Country Manager"; the next morning, the right people get the right email.

Watches for: "India Country Manager" · "India Site Lead" · "Head of India Engineering" · "India CTO" · "GCC India"

02

Foreign subsidiary filings

Registry · India MCA · Claude classifier · Apollo

Foreign companies incorporating an Indian subsidiary, fresh filings, last 7 days.

Why it fires. The entity exists; the build hasn't started. They need talent, workspace and compliance from week one. A US robotics company files an Indian subsidiary; their CTO gets a 30/60/90-day setup playbook.

Watches for: "wholly-owned subsidiary" · "100% foreign holding" · "private limited" · "incorporation certificate" · "FDI route: automatic"

03

India build-out commitments

Earnings · SEC EDGAR · transcripts · Claude · Apollo

Public companies mentioning India, GCC, or offshore expansion in earnings calls or 10-K filings.

Why it fires. The board has approved it; the strategy is on the record; execution leaders are under pressure. A public healthcare company commits to 10×'ing Bengaluru; the CTO gets an operational audit pitch within the week.

Watches for: "Bengaluru engineering hub" · "expanding India operations" · "offshore center" · "India headcount growth" · "GCC investment"

The actual product

The client's system, live: 8 signals, 6 pipeline stages, 3 years of build history, one company it serves.

Request demo access → Login required · for invited customers and partners
Your case study is next

Every engine starts with a signal map.

Tell us what you sell. We'll come back with the moments a company needs it most.

Book an intro call →
Pricing

Built once. Priced honestly.

One setup engagement to build your engine with you. Then credits, priced per lead delivered, not per seat, tier, or feature.

Plan 01 · Foundation

Signal starter

$2,000one-time build
  • 4 custom signals built, tested, and live: mapped to the deals you actually close
  • Full ICP research report: who buys, why they buy, and the moments they become buyers
  • Outbound setup guide: domains, warmup, DMARC, sequencing, written for your team
  • Copy in your voice, reviewed with you before anything sends
  • Slack operating layer wired into your workspace
  • 24/7 support in a shared Slack channel
Book an intro call →
Plan 02 · Full engine

Signal engine

$3,000one-time build
  • 10 custom signals built, tested, and live, covering your highest-intent moments
  • Everything in Foundation: ICP research report, setup guide, your voice encoded
  • Outbound infrastructure assessment and full build: inboxes, warmup, sequencer, CRM wiring
  • Decision-maker mapping across every trigger, contacts found and verified
  • First month of signal tuning included as your data comes in
  • 24/7 priority support in a shared Slack channel
Book an intro call →

Both builds cost about one month of a good GTM engineer. The difference is you never have to find, hire, or manage one.

After the build: credits, priced per lead deliveredWorked example · signal to inbox · everything included, no tiers, unused credits roll over
Signal detected & classified against your ICP$0.04
Company enriched: size, funding, footprint, tech$0.06
Decision-makers found (up to 3 per company)$0.09
Emails verified, bounces prevented$0.03
Personalized sequence written in your voice$0.10
Pushed to your sequencer, replies tracked in Slack$0.03
Total per signal-qualified lead~$0.35

Illustrative per-lead economics. Exact credit rates depend on your triggers and sources; you'll get a precise per-row cost in your build proposal.

Apollo, Clay, or a GTM engineer.

The three ways teams solve this today, next to ours. Judge all four on the same question: how close does each get you to buyers who are in-market right now?

What you need
Apollo
Clay
GTM engineer hire
Masonmade
Finds who's in-market this week
✗ Rented intent, same for everyone
✗ You build it
✓ If you hire well
✓ We find and tune it
Builds & maintains the system
✗
✗ Your ops team
✓
✓ Done for you
Fine-tunes as results come in
✗
✗ Nobody's watching
✓
✓ Tuning included
Writes outreach in your voice
✗ Templates
✗ Prompting on you
✓
✓ Reviewed with you
Time to first campaign
Same day, blind
~60 days building
1–2 months + ramp
2–4 weeks, live
What it costs
$1,200/year
$4,000+/year
$48,000/year
From $2,000 once

Clay doesn't find your signal, write your copy, or tune anything. We do all three, and we're still about a third of the price.

Where's Sales Navigator? It only sees LinkedIn. The one surface it reads is what gets posted there, and it hands you search results, not emails or phone numbers. Different job, so it sits out of this comparison.

The GTM engineer math

The same job. Very different bill.

Hire it yourselfGTM engineer + Clay + data
GTM engineer salary$1.5–4K /mo
Clay subscription (tier + credits)$350–800+ /mo
Data & email tools on top$200+ /mo
Time to hire and ramp2–3 months
Year one$25–60K
MasonmadeGTM engineer as a service
Engine build (up to 10 signals)$2–3K once
Credits, per lead delivered~$0.35 /lead
Signal tuning & maintenanceIncluded
Time to live2–4 weeks
Year oneAbout one month of the hire
Start here

One call. Your signal map included.

30 minutes. We'll map the moments your buyers become buyers, whether or not you build with us.

Book an intro call →