Rated 5 out of 5 stars
Absolutely brilliant. This achieved in seconds what it used to took me days to do manually (sorting invalid e-mails out of a club mailing list).
Unfortunately it does not work in TB 3.0 (yet) so I'm thinking of going back to thunderbird 2.
Now Supports TB3
Sorry for the delay. Not my highest priority in life. But it is now working and offers a new TB3-specific function. Check it out!