General answer should be No, depending on if it is the Internet Mail provider (deletes email) ‘Yes’ as you have found accepts the email.

Standard Shield, General answer should be No, this moves infected file to chest, ‘Yes’ accepts/allows/leaves the file there.

Personally I don’t like Silent Mode, I would rather know what is going on in my computer. If you are getting so many warnings, then you should review your security.