Zimbra vs HEY: What are the differences?

Developers describe Zimbra as "A collaborative software suite that includes an email server and a web client". It is an open source server and secured & fast customer software for messaging and collaboration. The software consists of both client and server components, and a desktop client. It also provides native two-way sync to many mobile devices. On the other hand, HEY is detailed as "A renovation. Modernized for the way we email today". Email deserves a dust off. A renovation. Modernized for the way we email today. With HEY, we’ve done just that. It’s a redo, a rethink, a simplified, potent reintroduction of email. A fresh start, the way it should be.

Zimbra and HEY can be primarily classified as "Email Services" tools.

Some of the features offered by Zimbra are:

• Activity streams and RSS feeds
• Badging and points
• Blogs and microblogs

On the other hand, HEY provides the following key features:

• Screen emails like you screen calls
• Fix bad subjects without busting threads
• The Imbox: It’s not a typo