for those that have a bit more to lose, such as a couple of the posters here with some priors
if a safe address is a problem, and many of us don't have that luxury
then be careful of stealth shipping options, many of these involve packages
packages are far more likely to inspected in customs than a simple letter
it will be the rare package that gets through if it is inspected, most of the stealth hiding methods are well known to customs
letters out number packages by a large ratio, there is stealth in large numbers