This is really not the place to give you a full-featured presentation on Eudora, so we will just cover a few major topics. For more details, consult the seminar materials for Eudora. For configuration settings consult the CSO documentation for Eudora for Win95/NT4 and for Macintosh. For IMAP-specific configuration issues, compare the December98 issue of the computer center's newsletter, the A3C Connection.
Eudora
is an email-application running on your PC or Macintosh. It retrieves your email
from a server and stores it on your hard drive, organized into mailboxes. Some
mailboxes are created by default: In, Out,
and Trash. You can create your own mailboxes by right-clicking
on the binder icon at the top (here named mail) and
choosing New. You even have the option of organizing mailboxes into folders,
but only one level deep.
Up until version 4 came out, the only protocol supported by Eudora was POP.
But even in version 3, there was support for multiple personalities. For each
personality an associated maildrop-account could be specified, so you could
get your email from multiple servers. However, all that mail was received into
the same In mailbox; there was no physical separation
of mail coming from, say, tigger and from icarus. 
With
the new IMAP protocol supported in version 4, this has changed. With
IMAP, you always have at least two places where email is stored: locally
on your hard drive, and remotely on the server. This is indicated by
two separate binder icons: mail for the local mail (this
represents your Eudora mail folder on the hard drive), and <Dominant>
for the remote mail of the dominant mail personality (unfortunately this name
cannot be changed). If you configure multiple personalities with associated
IMAP-maildrops, you will have a binder icon for each of them (here Math
Student and tigger_mail). To expand/collapse each
mailbox tree, double-click the binder (or hit Enter while it is highlighted).
Messages can be moved from one mailbox to another by simple drag-and-drop:
while a message is open, you can drag its truck-icon 
to any mailbox. While reading a mailbox's table of contents, you can drag the
message's row (multiple rows can be selected and dragged together). Holding
down Shift while dropping will copy the messages instead of moving.
It is easy to re-organize your local mailboxes by dragging them into another mailbox folder. You can not, however, move an entire mailbox from or to an IMAP server. You have to move all the messages contained in it instead.
There is one important difference between Eudora's treatment of local and remote mailboxes: for local mail, messages that you delete are moved to the Trash mailbox, which gets emptied usually when you quit Eudora. On remote IMAP-mailboxes, however, those messages are not moved nor deleted. They are just marked for deletion (pine users are familiar with this). When you decide to really throw them away, you have to manually purge them. Read on for instructions. By the way, in Netscape Messenger 4.5 the server behavior can be chosen, so Eudora may eventually support this as well.
