MailEnable Enterprise Edition 

MailEnable Enterprise Edition is designed for organisations or ISP's dealing with high volumes of mail, requiring greater control and flexibility over mail services.
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MailEnable Professional 

MailEnable Professional Edition is a enterprise level mail server for Windows 2000/NT/XP. It supports SMTP and POP3, supports an unlimited amount of email addresses, domains, groups and mailing lists.
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MailEnable Standard 

MailEnable Standard provides robust SMTP and POP3 services for Windows NT/2000/XP/2003 systems. Simple installation procedure and powerful administration tools means that you will be up and running quickly. FREE for personal and commercial use.
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