Is there a clean way of handling multi-part MIME data in C#.
After a call to a closed application (I have no access to change it) I get a MIME reponse like the one b
MimeKit works well I had been previously using code from Codeplex POP3 MIME Support but it has failed to parse some mimeContent and had to look for alternatives.
You can use OpenPOP library which includes mime parser.
There's also this one:
http://anmar.eu.org/projects/sharpmimetools/