What is E-Mail (Electronic Mail)?

Email (Electronic Mail) is a network service that allows users to quickly send and receive messages and files via electronic communication systems.

What is Email (Electronic Mail)?

This name primarily refers to the system that provides this service on the Internet using the SMTP protocol.

In the past, human society had to communicate with different sounds through smoke signals, drums, or other materials, as well as the remains of animals or plants.

Once writing was invented, another form of communication emerged with the development of alternative organizations, such as the postal service.

Thanks to these organizations, letters could reach their recipients. The sender only needed to know the recipient’s location.

With the advent of computers and the general development of Information and Communication Technologies, human resources are increasingly feeling the need to share, in addition to exchanging ideas on a particular topic. Since the early 1960s, it has been possible to send email messages between terminals in the same local network.

An MIT demonstration in 1961 showcased a system that enabled multiple users to access an IBM 7094 from remote terminals, thereby saving files to disk. This has enabled new ways of sharing information.

Email was introduced in the supercomputer in 1965 and spread rapidly to computer networks in 1966.

When computers were part of different networks, this service was impossible. It was enough to know the name of another user on the same network.

In 1971, Ray Tomlinson developed a program that enabled two-way email sending, where the recipient was also the sender.

Ray Tomlinson later incorporated the use of the @ sign. With this sign, he chose an identifier that distinguishes the user from the computer on which the mailbox is located.

How Does Email Work?

When you want to send a letter, you need to use a post office service. The recipient’s address is crucial here, so please ensure you write it correctly.

Then, you will need to wait a bit for the letter you sent to reach the recipient, depending on the postal code, which is separated by geographical regions.

This works the same way in the email system, but you will not have to wait for the time to send it.

It also allows the naming of other similar systems using different technologies. Email messages enable the transmission of various digital document types, as well as audio, video, and text.

Mail created on a network may be delivered not to a computer on the local network but to someone on the Internet or to an online server on another remote network.

Here are the steps a typical message must follow when sent from one network to another network or a recipient on the Internet:

An email message is created using SMTP, and as with all data transfers sent over the Internet, the message is split into IP packets using the TCP Protocol.

The mail transport agent on the local network examines the address in the packet being sent. If the address is on another network, the mail transport agent sends the mail to the mail transport agent on the receiving network using the edge routers on the local network.

Before mail can be sent over the Internet, it may need to pass through a firewall, which is a computer on a local network, to prevent unauthorized access.

The firewall monitors messages and data entering and leaving the network, and the message exits the network and is sent to an Internet router.

After the router examines the address, it determines where the message should be sent and sends the message.

Once the receiving network receives the email message, it uses a gateway to convert the IP packets into a complete message, then translates the message into a specific protocol used by the network and resends it.

The email address is then examined, and the message is sent to the specific mailbox it is intended to reach or delivered to a mail server via the POP protocol.

Commonly Used Free Email Services

1) Gmail

Gmail is the number one free email service system, without exception. This service has been operated by Google since 2004. Additionally, creating a Gmail account is a straightforward process.

Gmail allows you to view messages without opening them. You can read and write draft emails without an internet connection. You can filter the messages sent to you by categories and use tags instead of folders.

When you want to send an email, the message size limit in Gmail is 25 MB.

In addition to email services, Gmail offers a total of 15 GB of free storage space, with higher-quality content and features than the other services below.

2) Outlook

Previously known as Hotmail, it is a free email service developed by Microsoft for Windows systems.

The Outlook interface is similar to other email systems, featuring a left panel that lists folders, inboxes, sent messages, and drafts.

The main screen of the Outlook service is used to display the contents of the folder you are in, so you can browse the various emails in that section.

Messages can be archived or tagged to appear only in specific previews and not in the inbox.

If you receive unwanted emails, Outlook deletes you from that person’s subscription to prevent such spam from reaching you. Outlook also offers 5GB of storage, which is smaller than Gmail’s, and has a message size limit of 20 MB.

3) Yahoo

Considered the third-largest email provider in the world, behind Gmail and Outlook, Yahoo Mail features a modern design.

The appearance of Yahoo Mail allows users to find their inbox, spam folder easily, and deleted messages, as well as organize emails into folders.

You can create additional folders to organize your messages, drag emails into these folders, and adjust their locations. You can star messages to assign categories to them.

Yahoo also provides 1GB of storage, which is even lower than Gmail and Outlook, and the message size limit is 25 MB.

4) iCloud

It is a cloud storage system from Apple that has been operating since 2011. If you have an iPhone or iPad, you will have an iCloud email account associated with it. It’s less functional than other emails, and you can’t customize it.

The panel from which you read mail cannot be minimized or placed at the bottom of the inbox, such as Gmail, Outlook, or Yahoo.

You may need to give some recipients higher priority to avoid losing their messages. iCloud has made email functions simpler for users.