In Firefox, how can I implement a deletion policy for cookies based on their domain?

Question

Possible Duplicate:
How do I tell Firefox to only keep persistent cookies from sites I want?

I can deny cookies and allow some domains. I can delete cookies when they expire, or when I close Firefox. What I want to do:

• Generally accept cookies
• For all domains on my "exceptions" list (which I'm not using to allow / deny a cookie), keep cookies until they expire
• For all other domains, delete cookies when I close Firefox, or maybe when I "Clear private data"

It seems this can not be done via the standard settings. But can I hack some config, get some plugin, etc.?

Answer 1

I use the add-on CookieSafe:

This extension will allow you to easily control cookie permissions. It will appear on your statusbar. Just click on the icon to allow, block, or temporarily allow the site to set cookies. You can also view or clear the cookies and exceptions by...

Please note that the CookieSafe icon has two menus, that you reach by right-click and left-click. CookieSafe is very complete in its capabilities.