What is Email? Write its Advantages and Disadvantages

Electronic Mail:
With an e-mail anyone can send messages to other users of the internet and to many network connected to the internet through gateways. Most email programs also per miles users to attach data files and program files to messages. An internet electronic mail address has two parts, the user name and the domain name. The user name identifies the person who originates or receiver the mail; the domain name identifies the computer system on which the users had an account.

Advantage of Email: 
 Compared to the postal services, electric mail has many advantages.

1. It's fact-Most systems can deliver your message to the recipient in a matter seconds almost instantaneous. Many systems let you check to see whether the recipient has accessed you message. 
2. Its easy when you contact the service, you see a list of the messages you have received. You read the first message and then decide how to respond. You can reply to the message if you like, or just delete it if it requires no reply. You can save it or print it, you can even forward the message to others. 
3. It's available the email services is available round the clock and round the globe. 
4. It's fun International electronic mail systems enable you to find friends all over the world. 
5. It's cheap Worldwide electronic mail access is available through services such as gmail, outlook, hotmail, these services are free to certain level of service and  charge less than you expect to pay for monthly telephone service for some advance services. 
6. It's flexible you  can send a message to more than one person if you like. 

Disadvantages of Email:
Following are some disadvantages of email.

1. It is still not generally available to all. 
2. It has created an information overload, people are swapped by junk mails and finding what is relevant and need to read from the handled of mails. 
3. It is possible that any of the email contains virus, which may affect your computer system. 
4. Any email sent to wrong address can not be recalled back after 28seconds only in gmail. 
5. It is not completely private or confidential due to hacking. 
6. As email is free, so some one may send email for trouble so that you may feel uneasy to deal with.