Ream-C
Ream-C is a console-based full screen mail client
Ream-C is a free and open source console-based full screen mail client for Linux, and Unix-Like OSes. . It can handle multi-megabyte large mail-files in spool areas or file folders without problems. It has been updated to compile and work under Solaris and Linux. Installation is also simpler.
Ream-C is based on the original "ream" project (Paul Dourish), contains additional bug fixes.