SmarterMail Mail Server is described as 'SmarterMail delivers Exchange-level email server software features for a fraction of the cost' and is an app in the Online Services category. There are more than 10 alternatives to SmarterMail Mail Server for a variety of platforms, including Windows, Linux, Online / Web-based, Self-Hosted solutions and Mac. The best alternative is hMail Server, which is both free and Open Source. Other great apps like SmarterMail Mail Server are Microsoft Exchange Server (Paid), Citadel (Free, Open Source), MailEnable (Freemium) and iMail (Paid).
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.
Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited mail accounts, storage, attachment size, custom logo. Free for commercial use.
Sanwhole Exchange is a server running iMail, iPress and iStore services. iMail is an enterprise-class email server does Microsoft Exchange and Gmail work. iPress sets blog, forums and tickets in one. iStore is an online store.
Email gateway application (SMTP server) that makes it easy for senders to adopt the latest authentication specifications ( SPF and DKIM) to comply with changing ISP policies for accountable outbound email delivery. No over hype. It just delivers.
Xeams is a secure and powerful mail server for that includes a powerful spam filtering engine that eliminates up to 99% of junk email right out of the box. The software offers a flexible approach to email, making it a very user friendly server.