Oracle Communications Messaging Server Alternatives

Mailtraq is a commercial groupware and webmail server system for the Windows operating systems.

Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

Eudora Internet Mail Server is a highly advanced internet mail system that supports the all kind of email systems and clients either it is IMAP, POP3, SMTP and much more.

KerioConnect is a commercial mail and groupware server.

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

A fully fledged, free email server solution, an open source project (GPL v2).

Open Source

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

Horde Groupware is a free, enterprise ready, browser based collaboration suite.

Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.

Get your encrypted mailbox for free.

Open Source

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.