Rated 5 out of 5 stars

Από τον/την Brett Zamir στις Ιούν. 17, 2008 · μόνιμος σύνδεσμος

You can get the one for Firefox at https://addons.mozilla.org/en-US/firefox/addon/6622

(Giving a rating of 5 to balance out the comments about it not working in FF since it is for Thunderbird, but it is confusing)