Perhaps Cookie AutoDelete could help? https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete/ https://addons.mozilla.org/en-US/firefox/addon/cookie-au

Perhaps Cookie AutoDelete could help? https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete/ https://addons.mozilla.org/en-US/firefox/addon/cookie-autode... I use it to set which site I'd like to keep cookies for multiple sessions for, and which I'd like cookies to be forgotten for as soon as I've left. It doesn't have per-cookie granularity however, if that's what you're looking for.