About us

Your partner for business messaging

Moin Moin and welcome, we are seven. We’re based in Kiel and have been your trustworthy partner for communication solutions since 2003. With several hundred million SMS sent, we offer you established and stable interfaces for notifying your customers and employees. Our service is directly linked to the network operators, allowing us to offer fast and reliable transmissions. Throughout the DACH region, thousands of customers rely on our expertise – from small hairdresser stores that send appointment reminders via SMS, to start-ups and medium-sized companies.

With a great deal of commitment and entrepreneurship, we face the challenges of the market flexibly and innovatively. We strive for long-term customer satisfaction and accompany you throughout the implementation of your messaging application with clear added value for you and your customers.

Meet the team

 in 160 characters or less

Christian Leo


Christian claims to be a maid-of-all-work and in fact his tasks are too diverse for 160 characters. He was also the one who founded seven in 2003.

André Matthies

Web Developer

André knows his way around the jungle of code and finds a solution for every challenge. He also speaks the language of interfaces and plugins.

Jana Limbers

Content Management

Jana is taking care of words and pictures. She is creating, altering, optimising, correcting, and… well… managing content.

Niko Holstein

Sales Manager

Niko is your personal contact and ensures that you make full use of your opportunities. He always has our customers’ best interests in mind.

David Stiller

IT Systems Administrator

David pulls the technical strings behind the scenes and makes sure that all systems are stable. He creates the basis for our work.

Dominique Bridstrup

Public Relations

Dominique is making sure the world gets to know that SMS are still very relevant for communication. She is our API to the real world out there.


Chief Happiness Officer

Small but powerful, Lilli is in control! She is responsible for barking contents of any kind, but also for occasional pet breaks.

Where we came from…

Hello World
Happy Birthday!
sms77 is founded as a P2P service.
More than 1000 customers use sms77 to send inexpensive SMS already – mostly for private purposes.
More than
customers in 2007
First Relaunch
Relaunch of the sms77 webapp with added features and functionalities, such as inbound SMS and others.
sms77 Logo
Second Relaunch
In our second relaunch we change our focus to A2P messaging.
sms77.de is renamed sms77.io and we launch a new website.
Time to celebrate!
We’re happy to provide 5000 customers with our services.
More than
customers in 2018
Moving day

It’s time for a change of scenery. We are celebrating our move to a beautiful new office in downtown Kiel.

New name

sms77 becomes seven – with a new website and a new name, we are setting sail for the future.

There is more to come
We made ourselves at home in our new office and are happy to be growing continuously.
Here’s to the future!

…and where we’re going.

Here at seven, we believe that A2P messaging hasn’t reached its potential yet. With many companies still not involved, despite innumerable data suggesting it would be wise, we make it our mission to spread the word. SMS messaging is more reliable, more appreciated and more effective than any other means of A2P communication.
Think about it: how many people do you know that don’t own a mobile phone? Exactly.
With an ever growing international customer base we constantly work to improve our service and add functionality. Our goal is to help you unlock your potential with an individually scalable and adjustable solution.

Open positions at seven

Join our team and work with us on innovative solutions to optimize the communication of small and medium-sized companies in Europe.
We’re waiting for your application!

Affiliate program

Do you know a company, club or other organization in your environment that could use our professional communication solutions? Recommend us to others and benefit from attractive remuneration.


A lot has changed in the past, as can be seen above in our company timeline. The same is true for our gateway. If you want an overview of the recent development and new features of our system, you’re just one click away!