To prevent having to sort through spam manually, you can stop downloading Bulk Mail folder mail altogether, or you make use of a smart tag added by Yahoo! Mail to help you filter spam with your email client.
Yahoo! Mail adds the "X-YahooFilteredBulk" header to all messages that would normally end in the Bulk Mail folder. If you construct a filter in your email client that mimics the Yahoo! Mail Bulk Mail folder by putting spam in a special folder automatically.
Mimic the Yahoo! Mail Bulk Mail Folder Locally
To mimic the Yahoo! Mail Bulk Mail folder locally with your email client:
- Make sure you are not preventing mail in the Yahoo! Mail Bulk Mail folder from being downloaded via POP.
- Set up a filter in your email client that moves all mail that has "X-YahooFilteredBulk" in its headers to a special "Bulk Mail" folder.
- Here's how to do this with

