How do you get attention?

When you want nothing else but some attention and the person you want it from doesn't seem to notice, What do you do?

If it was a friend, family member etc if would be easy to just pick up the phone and call them right. i know thats what i'd do. Tricky thing is, when this person is your Dom/me. How do you do it? i don't know about everyone else but poking for attention isn't really a good thing to do, well.. ok sometimes it is and it could even be considered cute but generally no. Phone call is either way out of the question, text message.. well could work but not if this subbie wants a answer. So whats left, e-mails. How on earth do you write a e-mail that doesn't scream "give me attention please?" and how do you write it without turning it into a request or demand.

Its hard, and i just realized a little ago just how hard it really is.
Anyone have ideas?