Zimbra
Zimbra is an enterprise-class e-mail, calendar and collaboration solution, built for the cloud, both public and private. With a redesigned browser-based interface, Zimbra offers the most innovative messaging experience available today, connecting end users to the information and activity in their personal clouds. NetCetra offers all it's client this e-mail platform free of charge up to 10 mail boxes with your web address as part of your e-mail address. It will work with your desktop mail program, tablet and smart phone.
We can offer you a Zimbra VPS e-mail server for your company e-mail at a fraction of the cost of any other solution. We will give you your own mail server that you can administer yourself. No user limitation for 100s of mail users.