What is spam?

Spam refers to the e-mail forcibly sent without the permission of users, which contains advertisements, viruses and other contents.

Generally, for the security of the system, many email systems will automatically block and filter out some emails judged as spam; Users can also install spam filters for a comfortable mailbox experience.

The harm of spam

1, which increases the possibility of damaging mechanical equipment. Spam usually carries dangerous viruses and worms, posing a threat to computer hard disks.

2, affect the efficiency of e-mail, a large number of spam will make the mailbox blocked, so that the computer network speed dropped significantly.

3, affect the normal business contact with customers, resulting in indirect economic losses.

4. Expand expenses and costs. For communication organizations, a large number of spam makes them have to greatly improve the computer performance to maintain the normal operation of the mail server, and the cost paid for this is either digested by themselves or passed on to users.

5. Cancel useful emails, such as the limited number of emails that can be stored in the mobile phone. When the limit is exceeded, the old mail will disappear automatically, and a large amount of junk mail will quickly make the useful mail disappear.