In view of the revelations re: government access to web-based communication and the USPS photographing the exterior of every piece of mail sent through the postal system, I feel the only means of secure communication looks to be snail mail with no return address on the envelope. If you need to verify delivery, include a stamped postcard for the recipient to mail back to you; again with no return address. If I need to send a large document, I may start relying on an inexpensive thumb drive in a padded envelope. Thoughts?