Rated 5 out of 5 stars

miisli কর্তৃক নভে. 7, 2014 তারিখে ·

I am using OS X 10.9.5 and Thunderbird 31.2.0. Up and down arrows work as expected. I don't know what I would do without this add-on. Seriously!

This review is for a previous version of the add-on (1.0).  This user has other reviews of this add-on.