Sending spam that reaches users’ inboxes is extremely inexpensive. It’s not as cheap as sending legitimate email, because mail server operators around the world try to block your messages, but the cost of reaching a reasonable number of people is still very cheap. But what is even more important is how much less expensive it is when compared to operating a call center.
Consider for a moment what would be required if the emails were perfect replicas of legitimate emails. The volume of calls coming in to their call centers would increase by 10 or maybe 100 times. The problem is that the vast majority of the people calling would be reasonably intelligent people who are capable of identifying that something is “off” once they start talking to the call center.
So by making the email imperfect, they create a kind of screening filter that only captures individuals who aren’t able to discern that something is “off”. If they receive the poorly constructed email, but they *still* call the number, then they *must* be incapable of identifying the scam. This is exactly the person that the scammers want to talk to. They don’t even want to talk to the more competent targets, because they’ll just waste valuable call center time.
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