On Windows XP Home SP3. Using NOD32 AV 5 here with Thunderbird 6.0.2. In NOD32 settings under Web and Email|Email Client Protection|Email Client Integration all boxes are checked for all the email clients. How do I know if integration in Thunderbird is actually working? It seems that in other versions (4 or ESS) there was an option to scan messages that appears in the Thunderbird menus. I don't see any indication that NOD32 is integrated into Thunderbird.