Open Source Alternatives to MailEnable

A Windows mail server platform that provides email and collaboration services. It includes messaging services such as SMTP, IMAP, and POP3, along with collaboration tools for calendaring, contacts, tasks, and notes. The software is designed for hosting companies, corporations, and small businesses, offering integration with Microsoft Outlook and support for Exchange ActiveSync. Deployment is server based and includes features such as webmail, anti spam security, and multi factor authentication. The product is used to manage unlimited domains and mailboxes on a Windows environment. Recent updates introduce integrated chat for webmail and mobile, video and audio chat, and screen sharing via WebRTC. It also provides a remote administration API and a PowerShell management interface for system administrators. The platform is available in several editions including Standard, Professional, Enterprise, and Enterprise Premium to suit different organizational needs.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to MailEnable give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 1 open source alternative to MailEnable. The most popular is Haraka. It uses the MIT license and ships an official Docker image.