What do the numbers in the lower-left corner of a mailbox window mean?
The Mailbox Size button is located in the lower-left corner of an open mailbox. The first number is the number of messages in the mailbox, the second number is the size in K of the mailbox, and the third number is the size in K of wasted space (deleted messages). Press the Command key and click the Mailbox Size button to compact the mailbox and delete the wasted space. Note: Eudora will automatically compact a mailbox if the amount of wasted space in the mailbox is greater than the amount of space used by the messages in the mailbox.