how to disable auto render eml attachment in web interface?

[tiger2000]

Dear All,

currently, we know that Zimbra Web Interface can auto display the contents of EML attachment so that it looks like just what we see in Outlook express.

but may i ask how to disable this feature from web interface?
so that we can just download the EML attachment, you know, we want to read the email envelope and header information from the EML file.

by the way, when attachment is in EML format, there's no any download link available.

Thanks.