> JSON's not a network protocol, either. It's a data storage format, too. :p JSON is a data exchange format, it’s always been intended as a way to communicate

> JSON's not a network protocol, either. It's a data storage format, too. :p JSON is a data exchange format, it’s always been intended as a way to communicate between systems. You can use it for data storage just fine, but it’s not the primary role of the format. Mbox was not designed as an exchange / interchange format, but as a storage format for MUA, with some possibility of interoperability.