E-mail messages are permanent and public . E-mail may be subpoenaed by a court. When sending or responding to a message on a sensitive or controversial topic, don't send your message right away. E-mail can be sent quickly to a large number of people, so it is easy to send a message that you'll later regret. Sending Messages Keep the list of recipients and copies to a minimum.
Many people feel they receive too much e-mail.
Send messages on a single subject whenever possible. This makes it easier to file, retrieve, forward, and reply. Replying To Messages You should respond to a message within 24-48 hours of your getting the mail. When responding to a message, sometimes you want to respond to just the person who sent the message while other times you want everyone who got the original message to see your response. A common mistake is comments that are intended only for the sender but sent instead to the whole group.