1) Its literally impossible to tax each and every individual email from every singe different isp in the entire company. Its just impossible. 'nuff said.

2) If the government is proposing this, how come we havent seen anything on the news?

3) If they somehow find a way to tax every 2 billion emails sent every day where would the funding come from to hire people to monitor everything?

4) and lastly, the government or US postal service cant charge people for a service they dont provide.