Zarafa has been discontinued. Similar apps include Zimbra Collaboration Suite. It's paid, but Citadel and OpenChange are free. Other options are Microsoft Exchange, Axigen, iRedMail and AfterLogic Aurora. You can choose from more than 10 Mail Servers like Zarafa for Linux, Windows, self-hosting, the web and Android.
Sanwhole Exchange is a server running iMail, iPress and iStore services. iMail is an enterprise-class email server does Microsoft Exchange and Gmail work. iPress sets blog, forums and tickets in one. iStore is an online store.
China
Xeams is a secure and powerful mail server for that includes a powerful spam filtering engine that eliminates up to 99% of junk email right out of the box. The software offers a flexible approach to email, making it a very user friendly server.
DeskNow is a fully featured and easy to use mail and collaboration server with build-in antivirus and antispam. SyncML for mobile devices is separately licensed.
