How to write an e-mail message
Subject line
Don't write vague subjects
Recipients use subject lines to organize the opening of e-mails, to know whether and when they should read the contents. If there is no distinguishing, specific subject, then the content isn't interpreted as useful or enticing. Following are some examples of useless subject lines.
Explanatory but not specific
"posting from friend.."
Replies
Reply all or reply to sender
Always be aware when replying that programs allow you either to reply to the sender or to the sender and all the recipients, usually using the command "reply all." Forgetting this leads people to reply to all when they intend the message go only to the sender, embarrassment resulting.
Quote only when necessary
A reader's common gripe is that quotes in threads waste space and time. We should only include parts of previous messages if we think the reader will need to refer to them quickly.