[Usage] SMS handling

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.