MailCarrier is a full-featured mail server with the latest security and anti-spam functions. It supports SSL communication and SMTP/POP3 authentication methods based on SASL and NTLM. Many spam mails can be blocked through inquiry of sender's address, inquiry of RBL, filtering of message content, and so on.

MailCarrier provides you with various methods for running multiple domains. It can execute a mail server instance per domain in a single computer; you can run lots of mail servers without interference each other. In addition, you can make many virtual domains and alias domains per mail server instance as you want. For each domain and instance, you can build individual spam policy and security policy. The WebMail interface allows users to work with their e-mail from any location using a common Web browser like IE. This has many benefits, such as the ability for your staff and your members to be able to access and respond to their e-mail from anywhere in the world.