How to Import Avast SLL into Thunderbird?

Avast Free Antivirus / Premium Security
1

I got the message below from Avast. The export is no problem but ow to import into Thunderbird?

2

Here you go: http://www.avast.com/faq.php?article=AVKB91#idt_0301

3

Thanks - done! Love the Avatar.

4

You’re welcome.