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?
Is this related to your Yahoo account?
If so, have you logged in to Yahoo webmail to see if mail are still there?
No mail account Yahoo, I only use my yahoo account through webmail.
The account you use thunderbird with, have you logged in using webmail to check if mail are sill there?
no, I use Pop3 and no message remain on remore server.
What email provider(s) are you using with Thunderbird ?
If you know when this happened, you may be able to use a restore point to go back before the event ???
Fastweb and Aruba (italian providers).
I suggest you contact them and ask if they have a backup of the mail.
Also attach the CleanUp log file to your next post here.
It might tell what happened.