Despite the high market-share that Microsoft has secured for Exchange, many organizations have good reason to look for an Exchange alternative. Some are disappointed with the cost, challenge, and complexity of building, maintaining, and evolving an Exchange-based infrastructure. Others look for an infrastructure that is flexible and open to new approaches and new requirements.
However, Exchange continues to sell based on its compatibility with other programs, notably Outlook, Active Directory, Blackberry, and Exchange servers already deployed.
Due to the lack of a compatible Exchange alternative, organizations have had no choice but to buy Exchange, and then try and patch it with expensive software add-ons and by providing expensive server and (especially) expensive storage hardware and software, and to accept its limitations of openness and cost effectiveness. The resulting system can be fragile, needs ongoing administrative attention, is generally resistant to change, and typically requires substantial additional expenditure as time goes by.
Any competitive Exchange alternative has to not only fix these problems, but also to provide plug-compatibility to the rest of the email ecosystem since IT departments understand that their users will not tolerate changes to the desktop (no plug-ins) and require fully functional compatibility with Outlook. The new system must be truly "drop-in." Without these features, any Exchange alternative is no alternative at all. The PostPath Server is an Exchange alternative in the truest sense, in that it provides all the features of, and compatibility with, the Microsoft Exchange Server.
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