TCP/IP Note4

TCP/IP Mail

Your e-mail program will use a different TCP/IP protocol:

• Use SMTP to send mail;
• Use pop to download messages from the mail server;
• Connect to a mail server using IMAP

1. SMTP-Simple Mail Transfer Protocol

SMTP is used to transfer e-mail. SMTP is responsible for sending the message to another computer.

Typically, a message is sent to an SMTP server and then sent to another SMTP server ... and then eventually sent to its destination.

SMTP can transmit plain text data, but it cannot transfer binary data such as slices, videos, etc.

SMTP uses the MIME protocol to send binary data over a TCP/IP network. MIME converts binary data to plain text.

2. POP-Post Office Protocol

The POP protocol is used by the mail program to retrieve mail on the mail server.

If your mail program uses the POP protocol, once it is connected to the mail server, all your messages will be downloaded to the client.

3. IMAP-Internet Message Access Protocol

Similar to POP, IMAP protocols are also used by mail programs.

The difference from the POP protocol is that if IMAP is connected to a mail server, he will not automatically download the message to the mail program.

IMAP is your ability to view them through the mail server before downloading the messages. With IMAP, you can choose to download these messages or delete them, for example, you need to access the mail server from a different location, but just want to go back to the office and download the message.

TCP/IP Note4