CrossBox is described as 'Email With a modern and intuitive interface Chat Real-time Text, Audio & Video chat with file sharing File storage With a document previewer File sharing File and document sharing within the company, privately, or publicly Contacts Personal and company-wide' and is a Mail Server in the Office & Productivity category. There are more than 25 alternatives to CrossBox for a variety of platforms, including Linux, Online / Web-based, Windows, Self-Hosted solutions and Mac. Most alternatives are Mail Servers and WebMail Providers. The best alternative is Roundcube, which is both free and Open Source. Other great apps like CrossBox are Google Workspace (Paid), Zoho (Paid), mailcow: dockerized (Free, Open Source) and Microsoft 365 (Paid).
A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD distributions, with both i386 and x86_64 support. Easy, fast deployment in LESS THAN 1 MINUTE. View YouTube Video to check how easy it is.
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server products and is widely used by enterprises using Microsoft infrastructure solutions.
The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.
Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding options and is localized in over 29 languages (including right-to-left writing mode).
Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet.
James stands for Java Apache Mail Enterprise Server! It has a modular architecture based on a rich set of modern and efficient components which provides at the end complete, stable, secure and extendable Mail Servers running on the JVM.