Trying to migrate my old messages from Eudora to Apple Mail, I noticed that most of the information got lost or mangled in the process (all messages show up as unread, attachments get lost, non-ASCII character show up incorrect, HTML messages display as code instead of formatted text, …). Since I was not satisfied with this partial import, I wrote 'Eudora Mailbox Cleaner' which corrects all these issues. I later realized that problems are more widespread and added additional features to the application in order to support more email clients.