Most guides on how to handle spam mail include the advice, “Never reply to a spam message” – even if it alleges to have unsubscribe instructions. The reasoning is given that this merely confirms to the spammer that your e-mail address exists and is active. This is the same reasoning why modern versions of Outlook and other mail clients disable automatic downloading of images in unverified messages.
(As an aside, I’d add it is important to distinguish between genuine spam and general mailing lists that people get themselves onto; I’ve seen many a person continually deleting mailing list messages or adding the mailing list to their black lists. In these cases, the simplest solution is to unsubscribe from the list. I’m in favour of reducing Internet traffic!)
There is another extremely good reason, however, why people shouldn’t reply to spam. It’s incredibly unlikely that the e-mail address on the message is actually that of the spammer! Indeed, many spammers do use real e-mail addresses on the messages they send – but not their own; that of someone else who was on their spam list.
Periodically I get e-mails from people who have clearly received spam which, unfortunately, has had my e-mail address used as the sending address. The recipients write back to say “go away” or, most usually, something far more colourful. I used to be disturbed by this; I didn’t want people thinking I had genuinely sent spam but I soon learned there was no point responding. After all, why would that guy really care that he unfairly maligned a random stranger? And why add to Internet traffic by writing a response? And, I’ve learned, a lot of people retort with the quip “How did they send an e-mail using your e-mail address? You need better hacking protection“. How do you begin explaining that any e-mail address can be attached to a message – it’s not the case that it was sent from my computer. And how much trouble should one go to just to explain to yet another recipient of spam that spam exists, that spammers use false addresses, and that every single person on the Internet has this problem not just them?
Spam is a big problem beyond just the first message. So, people, avoid the hassle. Just don’t reply to spam!