MDaemon, Windows-based email server software, contains full mail server functionality and control with a strong emphasis on security to protect your email communication needs. Features include top-notch antispam security features such as Greylisting, DomainKeys Identified Mail (DKIM), DomainKeys, SPF, Sender ID; seamless integration with AntiVirus plug-in; built-in groupware functionalities; SyncML server for PIM synchronization; and more.
Internet Exchange Messaging Server
IEMS 5.1 is a messaging server that runs on Windows and Linux platform. It offers dependable mail storage. Features include disk quota management, file attachment handling support, queue management, protection from unwanted mails & virus attacks.
CryptoHeaven Secure Communication
Send and receive secure and encrypted email. Collaborate with others with the integrated group Instant Messaging and file sharing features. Use secure message boards and securely share documents. HIPAA and GLBA compliant.
LiteMail
LiteMail is an easy to use mail server with mail forwarding, and a catch-all address for each domain.
VisualCron
VisualCron / cron for windows , is a free task scheduler for Windows. VisualCron has an easy-to-use interface with a lot of features and functionality. VisualCron creates statistics like executing time etc.
BusinessMail Email Server + Anti Spam System
Fully multi threaded email server and anti-spam system with POP/SMTP plus web interface, offering powerful fully asynchronous operations, fully user configurable anti-spam system, user configurable filtering, aliasing, list handling plus lots more.