Built on

The scientific way to make cold email your #1 channel.

Chosen by leading inbound teams.

We build the outbound system. You close the deals.

The output of 10 SDRs - without the $50k/month payroll.

The system:
End-to-end infrastructure setup and monitoring

The Rolls Royce of Deliverability

Clay workflow architecture

The personalization engine that writes like your best SDR

Scrape your entire addressable market.

Segment based on intent signals (find who’s ready to buy NOW)

Full tracking

email → reply → meeting → closed deal

Sub-30-second reply notifications

391% boost in meeting conversions

CRM hygiene and data management

Clean data, accurate attribution

WHO IS THIS FOR

Built for inbound marketing agencies

Who we work with:
At least 1 salesperson on the team
Charge $3k+ monthly retainer (or $15k+ customer LTV)
Have at least 70,000 contacts in their Total Addressable Market

Your timeline

From Setup to Scale: Your First 90 Days

PHASE 1

Days 0-3 | Contract + Setup

Sign contract and pay invoice

Complete onboarding form

Infrastructure setup (domains + inboxes)

Strategy session scheduled

PHASE 2

Days 3-17 | Strategy + TAM Engineering

90-minute strategy session

Map your Total Addressable Market (TAM)

Scrape and organize all ICP companies

AI-powered qualification of prospects

Segment by role, industry, and pain points

Refine your offer for cold outreach

Weekly meetings scheduled (≤3hr response, 09:00-21:00 CET)

PHASE 3

Days 18-21 | Launch

First campaigns go live

14-day inbox warm-up complete

Test messaging across segments

Initial performance analysis

PHASE 4

Days 21-90 | Optimization

Run ongoing A/B tests across segments

Analyze performance weekly

Refine messaging based on data

Optimize for meetings booked

Weekly reports + meetings

Reach message-market fit

PHASE 5

Day 90+ | Scale

Contact entire TAM every 30-90 days

Focus on scaling what works

Maintain deliverability at scale

Maximize cold email as primary channel

Continuous optimization

Send close to 1M emails month

Most agencies track vanity metrics. We track what actually matters.

Positive replies are nice. Closed deals pay the bills. We optimize for revenue, not vanity metrics.

Other agencies

Track positive replies only

No idea which ICP converts to deals

Can't tell you which list performs best

Don't know which offer actually closes

Stop tracking after the reply

Send 10,000 emails/m maximum

Track email → reply → meeting → closed deal

Know exactly which ICP drives revenue

Identify highest-performing lists

Test and optimize offers until they convert

Full attribution to closed revenue

Has the capacity to scale past 1M+ emails per month

THE SCIENTIFIC APPROACH

The Scientific Method Applied to Outbound

We test everything. Then double down on what works.

4 testing variables

ICP Testing

The type of businesses we target for you

Business type, service focus, tech stack, etc.

List Testing

Where we find them

Intent signals, industry directories, event attendees, competitor followers, etc.

Database Testing

How we personalize at scale

Job postings, tech signals, content published, recent hires, etc.

Copy Testing

The messaging that resonates

Different angles, pain points, offers, value props

We test 1-5 different angles every single week. Aanalyze the results. Then we double down on the combinations that produce the highest ROI.

After 90 days, we've tested your entire Total Addressable Market and know exactly what works. Then we scale it.

CASE STUDIES

Inbound Agencies Using Outbound to Scale

I can’t tell who the co-founders are — everyone acts like one.
Miko Garrido

Founder

I can’t tell who the co-founders are — everyone acts like one.
Miko Garrido

Founder

I can’t tell who the co-founders are — everyone acts like one.
Miko Garrido

Founder

'You were the only agency that could paint a clean, detailed picture of how outbound actually works — infrastructure, data, and process.'
Peter Guba

Founder

'You were the only agency that could paint a clean, detailed picture of how outbound actually works — infrastructure, data, and process.'
Peter Guba

Founder

'You were the only agency that could paint a clean, detailed picture of how outbound actually works — infrastructure, data, and process.'
Peter Guba

Founder

5 months | 80-100k revenue generated | 2-3 retainer deals/m

$80-100k

Revenue Generated

1 lead in ~159

people contacted Ratio

2-3

Closed Retainer Deals / Month

“We were like, what is happening? This really works.”
Bram Vermolen

Owner

5 months | 80-100k revenue generated | 2-3 retainer deals/m

$80-100k

Revenue Generated

1 lead in ~159

people contacted Ratio

2-3

Closed Retainer Deals / Month

“We were like, what is happening? This really works.”
Bram Vermolen

Owner

5 months | 80-100k revenue generated | 2-3 retainer deals/m

$80-100k

Revenue Generated

1 lead in ~159

people contacted Ratio

2-3

Closed Retainer Deals / Month

“We were like, what is happening? This really works.”
Bram Vermolen

Owner

$82K in Pipeline in 7 Days

23%

Reply Rate

89.5%

Positive Reply Rate

1 Lead in 4.86

People Contacted

"Best campaign ever launched on our platform"
Ilija Stojkovski

CRO

$82K in Pipeline in 7 Days

23%

Reply Rate

89.5%

Positive Reply Rate

1 Lead in 4.86

People Contacted

"Best campaign ever launched on our platform"
Ilija Stojkovski

CRO

$82K in Pipeline in 7 Days

23%

Reply Rate

89.5%

Positive Reply Rate

1 Lead in 4.86

People Contacted

"Best campaign ever launched on our platform"
Ilija Stojkovski

CRO

CAMPAIGN RESULTS

Some results our campaigns have produced

faq

Frequently asked questions

What is Cold Labs and what do you do?

How do you send out many emails without hurting our domain or ending up in spam?

We've tried cold outreach before, and it didn't work. Why would this be different?

How do I know if this is right for my business?

Is there a way we can test before we commit to anything?

How much does your service cost, and is it worth the investment?

What visibility do I have over your campaigns?

Will this integrate with my existing sales process?

How quickly should I see results?

Do I need to commit to a monthly subscription?

What is Cold Labs and what do you do?

How do you send out many emails without hurting our domain or ending up in spam?

We've tried cold outreach before, and it didn't work. Why would this be different?

How do I know if this is right for my business?

Is there a way we can test before we commit to anything?

How much does your service cost, and is it worth the investment?

What visibility do I have over your campaigns?

Will this integrate with my existing sales process?

How quickly should I see results?

Do I need to commit to a monthly subscription?

What is Cold Labs and what do you do?

How do you send out many emails without hurting our domain or ending up in spam?

We've tried cold outreach before, and it didn't work. Why would this be different?

How do I know if this is right for my business?

Is there a way we can test before we commit to anything?

How much does your service cost, and is it worth the investment?

What visibility do I have over your campaigns?

Will this integrate with my existing sales process?

How quickly should I see results?

Do I need to commit to a monthly subscription?

If you're ready to make outbound your primary acquisition channel, let's talk.

Alexander Tsvetkov
Alexander Tsvetkov

Founder of Cold Labs

"Only for inbound marketing agencies with at least 1 salesperson on the team."

The Scientific Approach to Cold Email

 © 2025 ColdLabs.ai - All rights reserved

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The Scientific Approach to Cold Email

 © 2025 ColdLabs.ai - All rights reserved

Certifications
Clay enterprise partner badge

Partner

Expert

The Scientific Approach to Cold Email

 © 2025 ColdLabs.ai - All rights reserved

Certifications
Clay enterprise partner badge

Partner

Expert