Avast doesn't block/delete email

[Desperados]

Hi
I use thunderbird with an imap account
avast doesn't delete/mark attachments with virus, but if I save/open them, then avast correctly block them
but I'd like to block the email BEFORE I receive / open it, because some other users of my company are in the same situation and they are not so careful like me
thanks

[REDACTED]

To get the ball rolling, can you please confirm in the Cloud Console settings template for your workstation;
the Mail Shield is enabled, Scan inbound mail (POP3, IMAP4) is enabled, and Scan SSL connections is enabled.