Rated 3 out of 5 stars

Not compatible with ARC (Authenticated Received Chain), used by GMail and others.
But very good plugin!

https://dmarc.org/presentations/ARC-Overview-2016Q3-v01.pdf

-- Français --
Non compatible avec le projet ARC (Authenticated Received Chain) qui est utilisé par Gmail, entre autre.
Mais ce plugin reste très utile !

https://dmarc.org/presentations/ARC-Overview-2016Q3-v01.pdf

This review is for a previous version of the add-on (1.7.0).