Zimbra Collaboration Server is third largest messaging platform after O365 & Google, Cloud Zimbra VPS is an integrated enterprise-class messaging platform, using Zimbra as the core mailing solution bundled with premium email security, mail control features, email archiving, administrative control panel & mobility features. With a redesigned browser-based interface, Zimbra offers the most innovative messaging experience available today, connecting end users to the information and activity. Zimbra has 2 editions to offer , Zimbra Professional Edition which is more suited for Key users as they access mail from multiple devices & require all devices to be sync’d. Zimbra Basic Edition is more suited for general ( Staff ) users.