POP3 Post Office Protocol
- 1. POST OFFICE PROTOCOL COMPUTER NETWORKING B.Tech CS B1 B005 Samreen Reyaz B013 Dishant Bhatt
- 2. What is POP? • The Post Office Protocol (POP3) is an Internet standard protocol working on Application Layer used by local email software to retrieve emails from a remote mail server over a TCP/IP connection.
- 3. History Of Pop • The Post Office Protocol has been updated 2 times since it was first published. A rough history of POP is • POP : Post Office Protocol: published 1984 • POP2: Post Office Protocol: published 1985 • POP3: Post Office Protocol: published 1988. • So, POP3 means "Post Office Protocol – Version 3". Since 1988, POP3 has been the active version.
- 4. How Does POP Work? • Incoming messages are stored at a POP server until the user logs in using an email client and downloads the messages to their computer. After user downloads the message, it is deleted from the server. • While SMTP is used to transfer email messages from server to server, POP is used to collect mail with an email client from a server and does not include means to send messages.
- 7. Advantages Of POP • For receiving e-mails only on one single device, POP3 is useful • POP3 does not require an internet connection for accessing the downloaded mails.
- 8. Disadvantages Of POP • POP is a limited protocol that lets your email program do nothing but download messages to the computer or device, with an option to keep a copy on the server for future download. • With POP, it is not possible to access the same email account from multiple computers or devices and have actions synchronize between them.
- 9. Common Clients Using POP3 • Eudora • Gmail • Outlook Express • Mozilla Thunderbird • Netscape • Internet Explorer
- 10. Thank You