对于 openSUSE Tumbleweed，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/server:Kolab:UNSTABLE/openSUSE_Tumbleweed/server:Kolab:UNSTABLE.repo
zypper refresh
zypper install roundcubemail-plugins-kolab
对于 16.0，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/server:Kolab:UNSTABLE/16.0/server:Kolab:UNSTABLE.repo
zypper refresh
zypper install roundcubemail-plugins-kolab
对于 15.6，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/server:Kolab:UNSTABLE/15.6/server:Kolab:UNSTABLE.repo
zypper refresh
zypper install roundcubemail-plugins-kolab
对于 15.5，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/server:Kolab:UNSTABLE/15.5/server:Kolab:UNSTABLE.repo
zypper refresh
zypper install roundcubemail-plugins-kolab