One of the most important aspect of communication should be confidentiality, that is especially true when you are a lawyer or a notary and you need to deal with your customer's privacy.

As you should know sending an e-mail is like sending a postcard, therefore confidentiality is lost by the very nature of e-mail communication. That is because your e-mail are hoping from outgoing mail servers to switches and networks, then reaching other isp incoming mail servers and god forbid if unencrypted wireless access points were not used along the links. Anywhere along these hops can anyone equiped with freely available sniffer tools get access to any unencrypted private data. Scarry, isn't it?

Hopefully there are many easy to apply solutions that allows you to get the full benefits of e-mail without the disavantages.