As we cannot avoid spam emails, we still can detect them quickly and take action against it If any spam email remains unchecked it can possess some great threats. Some of the potential consequences for undetected spam emails are:
It can cause productivity loss.
According to the latest intelligence reports, one in every 359 emails harbors malware. So there is a risk of malicious infection.
Often carefully crafted to appear genuine, successful phishing emails are estimated by the FBI to cost US businesses $500 million each year and those are just the scams that are reported to the authorities!
Some malicious email has the ability to stole end details. If so then you will lose your IP reputation.