Rated 4 out of 5 stars

yazan: Hanjo tarih: Tem. 8, 2011 · kalıcı bağlantı

It does not work for me in Thunderbird 5 anymore (even after changing the maximum version). The standard mail header is always shown, the one from SmartTemplate is not.
It used to be a great addon, but currently I would rather recommend "Change quote and reply format".