Question

हां व्हाट इस द यूज़ ऑफ स्पैम इन ईमेल​

Answer 1

Spam is nothing but just the unwanted emails in our inbox. Spams should be prevented because....

1. They can spread viruses
2. They can be an attempt made by criminals to steal our money
3. They make it harder to find genuine mails
4. They take time to be deleted.

The one who sends spams is called a spammer.

And as you asked, Spams are of no use ! They are useless.