Gets the collection of nested parts of the multipart MIME part.
A reference to the ImapBodyStructureCollection object containing the immediate sub-parts of the given multipart MIME part, or a null reference (Nothing in Visual Basic) if the part is not multipart.
Certain sub-parts can also be multipart. The maximum number of nesting levels is not limited (although it's usually is not larger than 5).
ImapBodyStructure Class | MailBee.ImapMail Namespace