Zextras is a software company founded in 2011, with 20 years of experience in e-mail and collaboration field. Zextras’ missio ... n is providing private email and collaboration software tailored to regulated enterprises, public sector, and the service providers serving these industries. The platform Carbonio comes with a community edition, too, which is free. Leveraging Zextras’ heritage, the company also provides Zimbra users with the native plugin to increase Zimbra OSE capabilities. Currently, more than 100 million people are using Zextras technologies. read more