After a decade of using Eudora, I'm convinced that one of the features that sets Eudora apart from the "modern" E-mailers is the way it handles mailboxes (each mailbox a separate file), and attachments (which are saved as discrete, relocatable files). This in stark contrast with other E-mailers that store all messages and attachments in one big (and ever-growing) database.

So, before I take the plunge, I must know: How are files/mailboxes handled in this new E-mailer (I'm not yet ready to call it Eudora)?

Thank you.