How e mail is delivered using internet

Here's a step-by-step explanation of how email is delivered using the internet:

Step 1: Sending an Email

  1. You compose an email using an email client (e.g., Gmail, Outlook, Yahoo Mail) on your device (computer, smartphone, or tablet).
  2. The email client sends the email to a mail server (e.g., Gmail's SMTP server) using the Simple Mail Transfer Protocol (SMTP).
  3. The mail server receives the email and stores it temporarily.

Step 2: Routing the Email

  1. The mail server checks the recipient's email address to determine the destination mail server.
  2. The mail server uses the Domain Name System (DNS) to look up the IP address of the recipient's mail server.
  3. The mail server sends the email to the recipient's mail server using the SMTP protocol.

Step 3: Receiving the Email

  1. The recipient's mail server receives the email and stores it temporarily.
  2. The mail server checks the email's headers to determine the sender's email address and the recipient's email address.
  3. The mail server delivers the email to the recipient's email client (e.g., Gmail, Outlook, Yahoo Mail) using the Post Office Protocol (POP) or Internet Message Access Protocol (IMAP).

Step 4: Delivering the Email

  1. The email client receives the email from the mail server and stores it in the recipient's inbox.
  2. The email client displays the email to the recipient, allowing them to read, reply, or delete the message.

Internet Protocols Used

  1. SMTP (Simple Mail Transfer Protocol): used for sending emails between mail servers.
  2. DNS (Domain Name System): used for resolving domain names to IP addresses.
  3. POP (Post Office Protocol): used for retrieving emails from a mail server to an email client.
  4. IMAP (Internet Message Access Protocol): used for retrieving and managing emails on a mail server.

How the Internet is Used

  1. IP Addresses: each device on the internet is assigned a unique IP address, which allows devices to communicate with each other.
  2. Routers: devices that direct internet traffic between networks, ensuring that emails are routed to the correct destination.
  3. Networks: a collection of interconnected devices that allow data to be transmitted between them.

In summary, email delivery involves a series of steps that use various internet protocols and technologies to transmit emails between mail servers and email clients.