How To E-Mail A Prof

1. Unless told otherwise, or invited to, the proper way to address your instructor is as Professor Wissenschaft or Dr. Wissenschaft.
2. When you reply, delete almost everything of your professor's message (quoting everything is rarely necessary in e-mail). Leave just enough to make the original context clear. Why? Aside from being redundant (the person who just e-mailed you already knows what they sent you!), it also forces you to read the message you are replying to. Some students just hit return and send back the message they received asking questions that were already answered in the mail they are sending back! This doesn't put the student in the best light.
3. Acknowledge individual messages, especially if you were asking for help.
   1. It lets your instructor know that you received the message
   2. Gives him/her a chance to know if the help was useful (in case other students ask)
   3. It's common courtesy
4. Please use a descriptive subject line, and start [COMP 101WW] when e-mailing. This will result in the fastest possible response as it also helps to identify your e-mail as class related. See also How to send effective e-mails and How To How To Get Help Effectively Via E-mail.
5. Please do not send unsolicited attachments or programs.
6. Under no circumstances will rude mail be replied to.