At least in the first stages of her learning to use this tool her fears were
somewhat justified. After all, if she sends a letter via e-mail she also wants
to get a response so that she'll know that it went through. And how will she
know that it went through unless we reply. So for a while we were in a sort of a
bind, and our replies were along the lines of "I acknowledge that I got your
leter, but I'm not responding to it because there's no reason to expect a reply
to every letter". Technology may be difficult to make sense of, but it's nothing
compared to sentences like that.