📜  SMTP 和 POP3 的区别

📅  最后修改于: 2021-09-14 02:04:15             🧑  作者: Mango

对于发送和接收消息,我们使用两种协议,一种是 SMTP(简单邮件传输协议),另一种是 POP3(邮局协议版本 3)。它们也分别称为 PUSH 和 POP 协议。它们分别是代理、消息传输代理和消息访问代理,用于发送和检索消息。

SMTP 和 POP3 的区别:

S.NO SMTP POP3
1. SMTP stands for Simple Mail Transfer Protocol. POP3 stands for Post Office Protocol version 3.
2. It is used for sending messages. It is used for accessing messages.
3. The port number of SMTP is 25. The port number of POP3 is 110.
4. It is a MTA (Message Transfer Agent) for sending the message to the receiver. It is MAA (Message Access Agent) for accessing the messages from mail box.
5. It has two MTAs one is client MTA (Message Transfer Agent) and second one is server MTA (Message Transfer Agent). It has also two MAAs one is client MAA (Message Access Agent) and another is server MAA(Message Access Agent).
6. SMTP is also known as PUSH protocol. POP3 is also known as POP protocol.
7. SMTP transfers the mail from sender’s computer to the mail box present on receiver’s mail server. POP3 allows to retrieve and organize mails from mailbox on receiver mail server to receiver’s computer.
8. It is implied between sender mail server and receiver mail server. It is implied between receiver and receiver mail server.