[Usage] SMS handling

[Dario]

Hi all,
I have a question: what is the best practice (or the suggested 
behaviour) to handle SMSes in an application using oFono?
I am thinking about two common cases:
1) handling outgoing message status: I use the SendMessage DBus API but 
AFAIK I'm not aware of the status of the sending operation (pending, 
blocked, sent...) in the DBus response;
2) handling incoming messages when application is (re)starting/crashed: 
is there a way to retrieve a message if it comes in during a phase where 
the application is not running or it can't receive the IncomingMessage 
signal? Does oFono logs or stores the messages somewhere?

I think I found something in the "Example Call History" plugin, does 
this mean I need to create an oFono plugin to manage my application 
needs or am I missing some info/API somewhere?

Thank you in advance, best regards,
Dario.