To filter Yahoo! Mail spam to a special "Bulk Mail" folder in Eudora:
- Select Tools | Filters from the Eudora menu.
- Click New.
- Make the filter criterion read «Any Header» contains X-YahooFilteredBulk.
- Under Action, select Transfer To.
- Use the In button to select or create a "Bulk Mail" folder.
- Close the Filters window.
- Click Yes to save the new filter.

