Rated 3 out of 5 stars

Από τον/την ngg στις Οκτ. 6, 2017 · μόνιμος σύνδεσμος

Works very well (even in HTML mode) but, as another user reported, it also highlight empty recipient lines which impedes the goal of the addon: as you always see an highlighted field, it doesn't catch you eyes anymore.
Please fix this detail and it'll be perfect :-)