courier-imap from home:jsegitz:branches:server:mail project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:jsegitz:branches:server:mail/openSUSE_Tumbleweed/home:jsegitz:branches:server:mail.repo
zypper refresh
zypper install courier-imap