Hi Miss Snark!
I imagine some of the issues I'm having in the literary world (namely my status as a "published-challenged" individual) could stem from my general lack of SASE's in my partial packages. My excuse to myself has been my "establishe-roots-challenged" existence. For lack of better words, I'm a gypsy. My unfortunate childhood, confused adolescence, and alcoholism-ridden, "legally-challenged" young adulthood mean the most I've spent in one place since 16 is a year. So my "mobile" email address is a much better route to contact me. (As you can see, I'm quite the "challenged" individual!)
I realize this is my problem, and not the agents/editors who are kindly requesting partials. Up to now, I wasn't alluding to the reason behind the lack of SASE in my packages. Perhaps if I were to mention this briefly, it would help. Of course settling down would probably be the better solution; but Poppa was a rolling stone, and just like my daddy.
Three words: post office box.
And if you're moving state to state, invest in a mail forwarding service. You pay them a certain amount and they'll forward mail to you where ever you are. You may be more readily available by email but as everyone knows by now, sans SASE, Miss Snark has already recycled you.