Rated 4 out of 5 stars

Q1:
Why locale language zh-TW is marked?
"<!-- <em:locale>locale/zh-TW/</em:locale> -->"

Q2:
Signature and default is differently. Can be unified format?
Thunderbird 11 Default:
<br><pre class="moz-signature" cols="72">--
signature</pre>
But Signature Switch:
<div class="moz-signature">-- <br>signature</div>

Q3:
How put my signature below my reply (above the quote) ?

This review is for a previous version of the add-on (1.6.9).