5점중 3점 받음

ok, nice and interesting idea but what about cache? where extension stores downloaded data, how i can clear it?

이 검토는 현재 부가 기능의 이전 (3.2.6.8) 버전에 대한 것입니다. 

ThunderBrowse uses the same cache as Thunderbird does. You can clear it via Options < Advanced < Network & Disk Space and click the Clear now button.