I think it is very important to point out that cuniform tablets which contained business contracts and day to day corespindence, were mailed useing perfect secu

I think it is very important to point out that cuniform tablets which contained business contracts and day to day corespindence, were mailed useing perfect security envelopes, making reading it durring transit impossible without destroying the seal, as the envelope was made of clay, sealed with the unique unfakeable seal of the sender, giving there business activities security and a sense of trust that we dont have anymore.