Eudora is a popular email client with rich features for power users. To configure it, firstly create a mailbox to hold spam. In the Folders menu, right-click Eudora and select New. The following dialog should be displayed:
Enter the name, for example, Spam, and click OK.
To create a filter, click the Filters option of the Tools menu. Click the New button to create a new filter. Ensure that the Incoming box is checked. In the Header: field, select<Any Header>. For contains, enter X-Spam-Status: Yes. In the Action drop-down list, select Transfer To. Click the button that reads In, and select the Spam mailbox:
The filter has been created. ...