I use an adblocker that keeps YouTube from displaying advertisements before displaying a video. It works fine. However, when a friend sends me an email with a link to a YouTube video the video always begins with an advertisement when I click on the link. If I copy the link as text and paste it into my browser (Firefox) the ad doesn't appear when I start watching the video.

I'd like to be able to avoid watching the ads. Is there something I can set in Thunderbird to allow the adblocker to work before YouTube starts to display a video?