Преобразование MBOX в EML на C++

System::SharedPtr<IEWSClient> client = GetExchangeEWSClient(GetExchangeTestUser());
       
// Call ListMessages method to list messages info from Inbox
System::SharedPtr<ExchangeMessageInfoCollection> msgCollection = client->ListMessages(client->get_MailboxInfo()->get_InboxUri());
       
// Loop through the collection to get Message URI
for (auto msgInfo : System::IterateOver(msgCollection)){
    System::String strMessageURI = msgInfo->get_UniqueUri();
   
    // Now save the message in disk
    client->SaveMessage(strMessageURI, msgInfo->get_MessageId() + u"out.eml");
}