Windows Softwares to Email Server

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.

MDaemon Messaging Server is a comprehensive email server solution designed for businesses of all sizes. Offering robust security, flexible deployment options, and integrated collaboration tools, it provides a powerful alternative to cloud-based email services.

Microsoft Exchange Server is a robust mail and calendaring server designed for businesses of all sizes, providing enterprise-grade email, calendaring, and contact management capabilities.

hMailServer is a robust and free open-source email server designed for Microsoft Windows environments. It provides comprehensive support for standard email protocols like POP3, IMAP, and SMTP, making it a versatile solution for both small businesses and individual users needing a self-hosted mail service.

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.