E-mail Commander is a portable mail software application that does not require any kind of formal installation onto a computer's permanent storage device to be executed, and can be stored on a removable storage device such as a USB flash drive and used on multiple computers. For example, you can run the E-mail client from a USB device in an Internet Cafe while you travel (see more details about portable software at http://www.usbspase.com). Email Commander is sophisticated, but it's also very simple to use and you can easily customize the interface and layout to fit your messaging needs. The program automatically sorts incoming messages based on the criteria set by you. For example, you can have messages automatically placed in folders or mailboxes to be viewed at a later time. Advanced filters can be applied to any field of a message header or in the body of messages. The E-mail Commander system is capable of limiting the size of copied messages and even allows you to copy the message headers alone. If the header of such large messages is of no interest to you it can be deleted from the server without being copied to your computer. If it is the message you are waiting for the software will copy the remaining part of it at your request. E-mail Commander allows automatic sorting of incoming messages based on preset criteria and their placement in individual folders or mailboxes where they can be viewed at a later time. In such a system only those folders can be viewed, for example, where the most important messages are directed. The mail filter processes incoming messages based on header fields, for example, using the sender's address or the content of the Subject field.