What is the proper syntax for questions like "When was this message sent?" or "When did you receive my message?". Another example would be "What time was it when was this message received?".
Beyond that I'm having an inordinate amount of trouble with these things:
In the case of IMs would 送信する、送る、or something else used as the verb?
What verb form would be used for sent/received? is it a direct passive?
Which 何時 would it be? Would なんじ, いつ, or something else be used here?
I'm looking for the right syntax as much as or more than the right words. I'm not really sure why this is harder for me than other "when" questions.