How much does Customer.io make?

Customer.io reports $100M ARR as of September 2025. Customer.io $70M ARR 2024, estimated $100M ARR September 2025. Source: Sacra.

How long did it take Customer.io to reach $100k arr?

Colin Nederkoorn took 2 years to reach $100k arr with Customer.io.

Was Colin Nederkoorn a solo founder?

No. Colin Nederkoorn built Customer.io with co-founders.

What marketing channel did Customer.io use to grow?

Customer.io grew primarily through Communautés.

What industry is Customer.io in?

Customer.io operates in Marketing.

Customer.io $100M ARR: How Colin Nederkoorn built it

L'histoire complète

TL;DR

Colin Nederkoorn started Customer.io with 5 customers paying $10/month and grew it to $70M ARR over 10 years through patient, methodical growth.

I grew up in Singapore watching my dad run an international shipping logistics company. That experience taught me patience and the value of long-term thinking.

The Early Days

We started with 5 customers paying $10/month. Not exactly the explosive growth you read about on TechCrunch. But we were building something sustainable.

18 Months to $10K MRR

It took us 18 months to hit $10K MRR. That felt slow at the time, but we were learning our customers deeply. Every feature was built based on real conversations.

The Long Game

Unlike many startups, we didn't chase hockey stick growth. We focused on product quality, customer success, and sustainable unit economics. The compound effect over a decade was massive.

$70M ARR

Ten years later, Customer.io reached $70M ARR. We're now approaching $100M. The same principles that got us our first 5 customers still guide us today.

Founded: 2012
First customers: 5 at $10/month
Time to $10K MRR: 18 months
Current ARR: $70M+ (2024)
Growth approach: Patient, sustainable

Points clés à retenir

Slow early growth doesn't mean you won't build something big

Deep customer understanding compounds over time

Patient capital and long-term thinking beat quick exits

The journey from $10/month to $70M ARR takes a decade of focus

L'histoire complète

TL;DR

Colin Nederkoorn started Customer.io with 5 customers paying $10/month and grew it to $70M ARR over 10 years through patient, methodical growth.

I grew up in Singapore watching my dad run an international shipping logistics company. That experience taught me patience and the value of long-term thinking.