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由 obook 发表于 Feb. 17, 2009 · 永久链接

For use it with Thunderbird > 1.5.0 ( at your own risk ) :
Open unselect_message-1.3-mz+tb.xpi with a zip tool, edit the file install.rdf and change "xxx"
to your current thunderbird version. Save the zipfile, install with thunderbird.