Rated 4 out of 5 stars

Excelent, but... two major turndowns.

First: does not use local DNS and so does not work behind restritive firewalls (I´m a security conscious guy - I will not open my firewall even for outbound connections, without a proxy of some kind).

Second: if I manually choose view/headers/normal, it should stay this way.

Anyway, it´s a very usefull plugin (currently only at home, because of the DNS problem).

Response

> First: does not use local DNS and so does not work behind restritive firewalls

You can have it use any DNS server in the extension's options, but the DNS server must support TCP, due to a limitation in Thunderbird.

> Second: if I manually choose view/headers/normal, it should stay this way.

You mean it the verification line should disappear in normal mode? I think that defeats the purpose.