Changes
→Making Thunderbird a default mail and news client
If you want to make Mozilla Thunderbird a default mail and news client, add these registry entries:
'''Note:''' Make sure to change the path MOZILL~2 to MOZILL~1 if you have installed Thunderbird before Firefox or any other Mozilla product. (check on the command line by typing "cd %programfiles%\MOZILL~2")
REGEDIT4
<upgrade cmd='regedit /s %SOFTWARE%\Thunderbird\thunderbird.REG' />
== Silent installation of Thunderbird extensions ==