Magellan Pro (OS X) for Mac

From MAKI Enterprise:

This e-mail client was developed to be a simple, easy-to-use mailer. It allows users to send and receive multilingual e-mail. The program uses unicode as well as multiscript encoding, offers the option to download large-sized messages or attachments at a later time, avoids the complexity of Preferences or Settings options.

Main features: Read messages in "View." View is a new way of managing e-mail messages, it is easier and better than folder. Spam filter by accurate content analysis works without any other plug-ins. Automated responder: Magellan Pro automates reply according to the contents of received mail. Sherlock Index search is available as well as normal search. History and bookmark features like in a browser. Version 1.5.1 features support for OS X 10.3 (Panther). Improves the white list for spam filter. Improves spam filtering for HTML only mail. Changes the handling of sound files and of mail addresses.