No. They never claimed not to have address and subject line. In fact, that's all they have as demonstrated by the fact that it's all you can search unless you download your messages and decrypt them locally.
If they asked about message content, that would be questionable.
No. They are asking about information that would be in the headers, not the body of the email. They are also asking about sent emails, not received, so they could very well be looking at outgoing email logs, not your direct email.
No. They never claimed not to have address and subject line. In fact, that's all they have as demonstrated by the fact that it's all you can search unless you download your messages and decrypt them locally.
If they asked about message content, that would be questionable.
No. They are asking about information that would be in the headers, not the body of the email. They are also asking about sent emails, not received, so they could very well be looking at outgoing email logs, not your direct email.