How do spammers know an email is active?

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I recently put my old Hotmail account on my phone, which I traditionally only checked a few times a year. I went from 1-2 spam emails every few months to several a day, after going through all the old ones and marking them as spam. How is this possible? I haven’t given this email out in years, and none of my monitoring services have flagged this email recently. It seems spammers somehow know this email is active again.

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17 Answers

Anonymous 0 Comments

They don’t.

They’re sending out thousands of emails to different addresses from lists they have purchased. They are only interested in those that respond. It doesn’t matter to them if a message never gets delivered to a particular address.

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