All messages in Eudora in-box were deleted
The Eudora inbox may be corrupted, due to too many messages, which led it to create a new table of contents. Follow the instructions on this page -
On Windows:
http://www.eudora.com/techsupport/kb/2067hq.html
On Mac:
http://www.eudora.com/techsupport/kb/1271hq.html
To prevent this from occurring in future move old messages you want to keep to other mail folders rather than letting your inbox get too big.
http://www.cit.cornell.edu/computer/email/eudora/organizing.html
On Windows:
http://www.eudora.com/techsupport/kb/2067hq.html
On Mac:
http://www.eudora.com/techsupport/kb/1271hq.html
To prevent this from occurring in future move old messages you want to keep to other mail folders rather than letting your inbox get too big.
http://www.cit.cornell.edu/computer/email/eudora/organizing.html