Rated 3 out of 5 stars

Like the add on. But sometimes doesn't play nice with Gmail. Will only let you edit mail with the editor. It returns you back to Gmail, then can only edit by opening via the add on. Seems to nuke the ability to make minor changes in the text area with the app.
I think it may be a compatibility problems between it and
Restore your email settings addon.

This review is for a previous version of the add-on (1.9.2).