It is for the intended recipient only. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this Email. On defamation, it is not a good idea to use inappropriate, unwise or unkind denigration of any opponent. In the same way as it is not good tactics to denigrate the opposition in advertising. Employers can monitor Email and have the tools for doing this, but it is a good idea to tell everyone they are doing so.
Email is fast, convenient, informal, easy, and becoming universal.