Kolabnow is rather expensive and we had a lot of problems with it. The up-time was also very upsetting. Experience was 2 years ago. Self-hosting of Kolab is no

Kolabnow is rather expensive and we had a lot of problems with it. The up-time was also very upsetting. Experience was 2 years ago. Self-hosting of Kolab is not very flexible and a lot of work. We use self-hosted SoGO now and are very happy.