a Fat Eudora?
A program designated “Fat” (for example EudoraFAT 1.5.1) means that the program will run native on both the PowerPC as well as the 680×0 chips (in laymen’s terms: It will run as fast as possible on any Macintosh). The downside is the size of the program. Typically a FAT program takes up about twice as much space on your hard drive. RAM (memory) requirements are unchanged.