Zimbra Collaboration Enterprise Collaboration vs. Fastmail

Zimbra, a Synacor product, is an email and collaboration platform that includes contacts, calendar, tasks, instant messaging, and file sharing, plus add-ons such as videoconferencing, document creation, and file storage. Zimbra powers hundreds of millions of mailboxes in 140+ countries and is offered through more than 500 BSPs and 2000 channel partners. Enterprises, governments, and service providers trust Zimbra. Zimbra can be deployed in the cloud, on-premises (private cloud), or as a hybrid service. The Zimbra Business Solution Provider Network offers it as a Hosted Service.

Fastmail is a privacy-focused email hosting and productivity solution that helps businesses manage professional email communication, calendars, and contacts through a unified, ad-free platform. Founded in 1999 and independently operated from Melbourne, Australia, Fastmail provides organizations with custom domain email hosting, team collaboration tools, and administrative controls without relying on advertising revenue or scanning user data for commercial purposes.