 | Many folk, partially large companies, use SPAM filtering programs that discard email from people whose email address has not previously been entered as a friend. This means the first time you email someone, including the prof, a SPAM filter decides if your email is acceptable or not. A good email subject can prevent your email from automatically being put in the "dumpster". Some people (like the prof) quickly scan the email that the filter has put in the dumpster, and a good subject can inspire the recipient to rescue your email. My clue is CIS100 or CIS120 at the beginning of the email subject. A good subject is particularly important if your email address has lots of numbers like SJc234@yahoo.com or S123456@ucc.edu, which SPAM killing software targets.
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 | Assuming you get through the SPAM filter, you still have to get the human being to read your email. In this day of viruses and other ugly things on the Internet, and with everyone busy and with a limited amount of time, you need to convince the potential reader that this is a good message that they WANT to read. In a long list of emails the only clues are the From and the Subject. Make the subject explains the email.
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 | After sending your email, it will be in your sent folder. You may delete it if it is unimportant. But if you save it, either in the Sent folder or another folder, you are saving it because you want to retrieve it some time in the future. When you go to retrieve it, the Subject is the easiest and fastest way (unless your email program has a good Search facilty like Gmal or other than taking the time to open and read all your saved email to that recipient.)
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 | Even more importantly is if the recipient saves your email, he/she must locate it a week, month, year or several years into the future using the subject that you wrote.
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