Who We Are

We create outbound campaigns for B2B service companies that want more sales calls within 4 weeks

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Meet The Founders of closed:in

Meet The Founders of closed:in

We founded closed:in with one goal: to take the pain out of outbound for B2B teams.
Instead of spending hours guessing who to contact, writing cold emails that go unread, or worrying about deliverability, we built a system that handles it all.
Today, our campaigns deliver qualified sales meetings every month for SaaS, e-commerce, and service companies — and we’re just getting started.

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Marketing Mastermind

Jurre Groot

With a background in marketing and ecommerce Jurre knows exactly what is needed to trigger responses from your ideal client.

7 figure founder

Find the perfect plan tailored to your needs, offering the right balance of features, flexibility, and value to help you achieve your goals effortlessly.

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7 figure founder

Find the perfect plan tailored to your needs, offering the right balance of features, flexibility, and value to help you achieve your goals effortlessly.

1

Serial Founder

Created and exited several succesfull companies. Finally resulting in putting everything into closed:in.

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Serial Founder

Created and exited several succesfull companies. Finally resulting in putting everything into closed:in.

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Certified Instantly Expert

One of fewer than 60 people worldwide officially recognized by Instantly for cold-email mastery.

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Certified Instantly Expert

One of fewer than 60 people worldwide officially recognized by Instantly for cold-email mastery.

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Data Perfectionist

Max Münstermann

Max Münstermann

Hi, nice to meet you! I'm Max, co-founder of closed:in. With my background in psychology and entrepreneurship Msc I know how people think and what makes them buy. I combine this with my expertise in Instantly and Clay to create a cold outbound sales machine that gets results.

Define Your Vision

Find the perfect plan tailored to your needs, offering the right balance of features, flexibility, and value to help you achieve your goals effortlessly.

1

Define Your Vision

Find the perfect plan tailored to your needs, offering the right balance of features, flexibility, and value to help you achieve your goals effortlessly.

1

B2B retail

With my last company we turned our online brand into an instore product that was being sold by 20+ stores.

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B2B retail

With my last company we turned our online brand into an instore product that was being sold by 20+ stores.

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Clay & Instantly Expert

One of fewer than 60 certified Instantly Experts worldwide and a Clay outbound expert, I design outbound systems that book meetings on autopilot.

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Clay & Instantly Expert

One of fewer than 60 certified Instantly Experts worldwide and a Clay outbound expert, I design outbound systems that book meetings on autopilot.

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10+

B2B companies trust us

10+

B2B companies trust us

10+

B2B companies trust us

50%

Reply rate on top campaigns

50%

Reply rate on top campaigns

50%

Reply rate on top campaigns

$5m+

Pipeline revenue generated

$5m+

Pipeline revenue generated

$5m+

Pipeline revenue generated

We Have Your Ideal Customer Closed In

Curious about the results we can generate for you? Let’s explore your potential!

info@closedin.io

closed:in

All rights reserved, ©2025

We Have Your Ideal Customer Closed In

Curious about the results we can generate for you? Let’s explore your potential!

info@closedin.io

closed:in

All rights reserved, ©2025

We Have Your Ideal Customer Closed In

Curious about the results we can generate for you? Let’s explore your potential!

info@closedin.io

closed:in

All rights reserved, ©2025