Few weeks ago I installed Avast internet security for extra security in email . Two days ago, the virus has found malware in incoming messages and since then has disappeared all mail from 2009 two days ago .
Only 20 older messager remained in Inbox folder, I lost over 3000 messages!!
The email client is Thunderbird , the operating system is Windows 10 home.
I bought Avast Internet Security for extra security: is this the extra security? Deleting all messages in Inbox if Avast find a malware?
How can I find my messages?