Hi, we're running some sort of Apache server on an Windows Server machine. Our webb application recieves e-mails. Nowadays docx, xlsx formats are quite common and our users got those extensions for ZIP files. opening up the file like a archive with files. Pretty but now very useful. The only way for the users to got the documents is right-click choose download. Save the file on disk and replace the ZIP extension to the correct extension (i.e. document.docx instead of document.zip). The file itself is named document.docx in the e-mail.