These instructions are specific to Yahoo Mail, but the basic principles can be applied to any email program, whether Web-based or not.

1. Login to Yahoo Mail.

2. Click on the Folders link on the left side of the page.

3. On the right side of the screen, enter a "Folder name" in the box. For my Washington University class, you could use "Scott's Class" (that's just a suggestion -- you can call it what you will).

4. Now click on Options on the left side of the page.

5. On the Options page, click on Filters in the middle of the page.

6. Click on the Create button.

7. OK, now you have a choice. What do you want to filter BY? In the case of my Washington University class, I purposely have the following in every Subject of any message sent by our listserv: [GranneWU]. Therefore, it would be easiest to filter by that (that's why I do it). So set up a filter with this condition:

Subject contains [GranneWU]
Deliver message to Scott's Class

8. Click on the Save button. You're done! (to create more folders, just repeat the above steps)

Now, all messages from our class will go to the "Scott's Class" folder. Just remember to click on the Folders link on the left side to see the folders to see if there's any new mail in one of your sub-folders!