Rated 5 out of 5 stars

Looks very well. Will be cool if you add more sites with the temporary emails.

This review is for a previous version of the add-on (0.4.1-signed).  This user has a previous review of this add-on.

I'm open for suggestions.

Edit: Version 0.4.3 features some new services, but it's still waiting for its review by AMO.