Rated 5 out of 5 stars

Thunderbird update some days ago.
Now I miss this addon sooo much, as it helped me detecting spam and phishing mails.
Why couldn't real sender adresses be shown by Thunderbird itself ? It's a real gain concerning security.

This review is for a previous version of the add-on (1.0.4).  This user has a previous review of this add-on.