Email basics working and its advantages and disadvantages

email working

1. E-MAIL What is an E-mail? Email stands for Electronic Mail . It is a method to send messages from one computer to another computer through the Internet. It is used in every field. e.g. business, education, government, technical communication, and document interactions. It allows communicating with people all over the world. Multiple E-mail Clients: Gmail Outlook Proton Mail , many more.

2. Working of E-mail Open an E-mail client software and compose a new mail. Send the mail. The mail is transferred to mail server(computer system responsible for storing and forwarding emails). Mail server analyses the mail and identifies the route to send the mail to the recipient. The mail reaches the recipient/destination mail server. Mail server transfers the mail to the recipient email address or account.

3. Components of E-mail Basic components of e-mail system: User Agent (UA) Message Transfer Agent (MTA) Mail Box Spoof File User Agent (UA) A program used to send and receive mails. Also known as Mail Reader. It accepts variety of commands for composing, receiving and replying to messages

4. Mail Transfer Agent (MTA) Responsible for transfer of mail from one system to another. To send a mail, a system must have client MTA and system MTA. It transfer mail to mailboxes of recipients if they are connected in the same machine. It delivers mail to peer MTA if destination mailbox is in another machine. The delivery from one MTA to another MTA is done by Simple Mail Transfer Protocol.

5. MAIL BOX It is a file on local hard drive to collect mails. Delivered mails are present in this file. The user can read, delete according to his/her requirement. To use e-mail system each user must have a mailbox . Access to mailbox is only to owner of mailbox.

6. Spoof File This file contains mails that are to be sent. User agent appends outgoing mails in this file using SMTP. MTA extracts pending mail from spool file for their delivery. E-mail allows one name, an alias, to represent several different e-mail addresses. It is known as mailing list. Whenever user have to sent a message, system checks recipient's name against alias database.

7. Advantages and Disadvantage of E-mail Easy and Fast: Composing an email is very simple and one of the fast ways to communicate. We can send an email within a minute just by clicking the mouse Secure: Email services are a secure and reliable method to receive and send information. Mass Sending: We can easily send a message to many people at a time through email. Multimedia Email: Email offers to send multimedia, documents, images, audio files, videos, and various types of files.

8. Disadvantages Malicious Use: Anyone can send an email just by knowing their email address. An anonymous user or unauthorized person can send an email if they have an email address. The attachment feature of the email be the major disadvantage of it, hackers can send viruses through email because sometimes the spam feature unable to classify suspicious emails.  Spam: Days email services improve this feature. To improve this feature sometimes some important email is transferred into spam without any notification.  Time-Consuming: Responding through email takes more time rather than other message services like WhatsApp, Telegram, etc. Email is good for professional discussion but not good for casual chatting.