The MIME preference (HTML vs plain text) should be associated with an Importer, not a mailbox, since the Importer is going to determine what Input Format is used, and this should correlate highly with the choice of MIME type.
I will remove the 'Body' (origbody) mapping source and instead present the 'Body (HTML)' and 'Body (Plain text)' as two separate mapping sources. This will require that the sources be able to fall back to one another if only one is actually available for a given message.
Comments
Comment #1
danepowell commentedhttp://drupalcode.org/project/mailhandler.git/commit/6b5d533
http://drupalcode.org/project/mailhandler.git/commit/c47e432
The preferred MIME type (text/html) can no longer be set on a per-mailbox basis. Instead, you must map the appropriate body field as a source in a Feeds importer. You will need to update your existing importers to use the appropriate mapping source.