New Mailbox

Create a new mailbox underneath an existing mailbox or a new top-level mailbox in Mail.

Parameters	Description
Action	Create a new mailbox or a top-level mailbox.
Mailbox Name	The name of the mailbox to create.
Mailbox	A mailbox in Mail.
Account	An email account in Mail. Can also refer to the local On My Mac folder in Mail.

Returns	Description
Boolean	True if the mailbox was created successfully, or error if not.