Just as a side note, if you still have the email,
you might look into it and report them to their
provider. If you look at the message header, you
may be able to find their email host. I got a
similar-but-different fake email from someone
using Starband, and reported them, since they
were violating Starband's TOS. Who knows if it
had any effect, but at least the effort was made.