Discover best Mail Server Mac OS X softwares, apps and websites.
Zarafa is an open-source groupware and email server platform, providing powerful collaborative features similar to Microsoft Exchange but with flexibility and cost advantages. It offers email, calendaring, contacts, and task management.
Kopano is a versatile open-source groupware suite offering email, calendaring, contacts, and online collaboration tools for businesses and organizations. It provides flexible deployment options, including on-premises and hosted solutions, with strong focus on data privacy and security.
Postfix is a widely used and highly regarded open-source mail transfer agent (MTA) designed to be a significantly more secure and robust alternative to Sendmail. It handles the routing and delivery of email, acting as the central hub for your organization's or system's email flow.