users: As green as you can be.

Here at we are often surprised when companies flaunt having turned to green energy to power their services. We always considered this the lowest bar of sustainability everyone should meet. After all, this is the 21st century and we have known for decades the damages and risks of fossil and nuclear energy. That's why for all of's history, every server and all of Kolab Systems have run on green energy. Our energy mix is mostly hydroelectric, some solar, and a little bit of wind, due to the geographic conditions in Switzerland.

But powering machines from renewable sources is only one way protects the environment. also uses and develops exclusively Free Software. Apart from all its other advantages, Open Source applications, including Kolab, are incrementally improved. Every new version makes the software more efficient and more able to get the most out of any hardware, better preserving our natural resources and making the world a better place to live in.

So, as a user of, you are as green as you can be, and always have been.