Rated 5 out of 5 stars

Works very nice! Well implemented!
Only 1 thing: I do not see the logic, why the entry in context-menu appears between "delete" and "paste". OK, maybe because it pastes the e-mail into the field...
Below "delete" would look nicer.. Well, I now made the change myself in browser.xul :)

This review is for a previous version of the add-on (0.4.3.1-signed).