[IMPOSSIBLE] - RSS ∞
- See also Exporting YouTube subscriptions as Thunderbird RSS feeds
Edit > Preferences > Advanced > Config Editor
[UNSOLVED] - Flash ∞
I don't know of a way to make flash videos appear, even in Thunderbird 3 beta1
Hrm. I can't even get the plugin to be detected.
[UNSOLVED] - Ad-blocking and content manipulation ∞
I don't know of any way to do this. I want Firefox embedded in Thunderbird somehow, so I can use those extensions.