Investigating and Scrutinizing E-mail CHAPTer 10 E -MAIL IS THE ELECTRONIC EQUIVALENT of a letter or a memo. Computers and servers retain these electronic messages in digital format. An e-mail may include attachments or enclosures. And organizations and individuals use e-mail for communicating sensitive, protected, or confidential information. E-mail is also a very common method for distributing intellectual property, such as client lists or copyrighted material. You may send one with desktop and laptop computers and other portable devices, such as mobile phones and personal digital assistants (PDAs). E-mail creates a security vulnerability. It is a virtual door that leads directly