God. I can just imagine him sending out distress signal after distress signal, just hoping against hope that there's still another Time Lord out there to receive it. Then finally accepting that he's the only one left. From the look on his face, I'd say this was his last attempt. [btw, I appear to have favorited this a while ago. Don't know why I never commented.]
You have caught my idea so right!))) Thanks for that.) Yeah, Nine's not receiving this 'e-mail', he's about to send it, but, like, hesitating. (If I put it right... I beg a pardon for my English if I didn't.)
Usually Time Lords don't need devices to know whether there's anyone else - remember the end of the 'Dalek' episode. He could have sent his will or something like that before the destruction (and expected self-destruction) though.
Yeah, Time Lords can feel each other, but there is always a possibility that there's someone left in the Universe or even outside. And if the Doctor really did something like this (sent the 'box') he wasn't too wrong anyway: the Master was still alive. But, yeah... The Master is the Master.
Hugely complicated situation, this. Depending on how one interprets the early history of Nine, everything's possible - from him sending a message to _avoid_ any contact to desperately seeking one. Getting a reply and not getting can both be a source of elation or a source of horror.