Contact
Let's talk, human to human
Call us, write to us, ask us anything – a real person answers, not a form. We reply the same business day.
Who we are
Rooted in Salo, at home in Europe
We are a Finnish-German team headquartered at the Salo IoT Campus – the same building where Nokia once made phone history. Today we're writing the next chapter here: making phone calls worth trusting again.
Our Berlin office brings that Finnish engineering know-how to the heart of Europe. A small team, a low threshold – and people who actually get back to you.
Finnish-German team
Salo and Berlin: two home markets, one way of working.
Roots at the IoT Campus
We build calling technology where it has been built for decades.
A person answers
No queue numbers, no ticket carousel – you get a name, a face and an answer.
Here we are
Reach out directly to the person who knows your market best.
DACH
Wir sprechen Deutsch – from Berlin.
Partnerships
Reselling, integrations and collaboration.
You can also reach our sales department by email at .sales@koll.to
Technical support
24/7 chat
Our chat agent is available to assist you 24/7 – open it from the bottom right of the site.
Koll Help Center
You can find answers to the most common questions in the Koll Help Center.
Reach technical support via the Support link in your Koll app or by emailing support@koll.to.
Where to find us
Our doors are open – drop by or book a meeting.
Koll Group Oy
Joensuunkatu 7, 24100 Salo
Y-tunnus 3410913-5
Salo IoT Campus – the former Nokia building, now our home.
Koll Technologies GmbH
Richard-Sorge-Straße 81, 10249 Berlin
HRB 289748 B, Amtsgericht Charlottenburg
Our Berlin team serves customers across the DACH region.
Want to see what a Koll call looks like on your own phone?
Book a 10-minute demo call – we'll call you with Koll.