Rated 5 out of 5 stars

per miko007 el set. 30, 2014 · enllaç permanent

Fixed Version: https://github.com/ath0mas/firefox-gmail-manager-ng/blob/develop/dist/gmail_manager_ng-0.6.5.3-fixFF32.xpi

Enjoy

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EDIT: Oct 1 2014 Updated link Everything should Work ! :)