Step 1: Check Option Setting

From the main Eudora screen, select Tools / Options / Sending Mail. If you'd like to save copies of the messages you send, then the "Keep" box should be checked. Mail you send will remain in the Out box. Close the options window.

Step 2: Waiting to Empty

It's a good idea to go through the Out box occasionally looking for messages to delete. Keeping your messages cleared out helps Eudora, and you, work more efficiently. When you delete the Out box messages, they go into the Trash box. It's not a good idea to empty the Trash box right after you put a lot of messages into it, so a good time to delete Out box messages is right after you empty the Trash.

Step 3: Learn the Sequence

Double click the Out box to select it. Select all the messages by choosing Edit / Select All. The keyboard shortcut is <Ctrl-A>.

Step 4: Delete the Messages

Press the Delete key on the keyboard to delete the messages. If some of them have not been sent, you will be asked to confirm whether you want to delete them. Remember, the messages will still be available in the Trash in case you need them, until the Trash box is emptied.