5 ਤਾਰਿਆਂ ਵਿੱਚ 3 ਮਿਲੇ

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

ਇਹ ਸਮੀਖਿਆ ਐਡ-ਆਨ (3.2.6.8) ਦੇ ਪਿਛਲੇ ਵਰਜਨ ਲਈ ਹੈ। 

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