The MIME (Multipurpose Internet Mail Extensions) message format specifies what type of content a message has and how this message is encoded. To find out more about MIME, see the Microsoft documentation. For example, you can use MIME expression functions when you need to manipulate MIME headers.
The MIME/Stream expression functions can be grouped as follows:
•Functions dealing with headers in streams (get-mime-header, get-mime-headers, set-mime-header, set-mime-headers, add-mime-header, add-mime-headers, reset-mime-headers)
•Functions dealing with specific tasks (is-mime-content-type, get-mime-content-type-param, get-mime-content-id, set-mime-content-id, set-mime-content-disposition, get-mime-content-disposition-param)
•Functions converting streams to different streams (mime-content-encode, mime-flatten, mime-multipart, mime-multipart-from-list, mime-multipart-related, mime-split-multipart, mime-parse)
•Functions producing new streams (stream-open, stream-from-string, empty-stream)