POP3
•POP3 (Post Office Protocol 3) is the
most recent version of a standard protocol for receiving e-mail. POP3 is a
client/server protocol in which e-mail is received and held for you by your
Internet server. Periodically, you (or your client e-mail receiver) check your mail-box
on the server and download any mail, probably using POP3.
•POP3 is designed to delete mail on the server
as soon as the user has downloaded it. However, some implementations allow
users or an administrator to specify that mail be saved for some period of
time. POP can be thought of as a "store-and-forward" service.
•The conventional port number for POP3 is
110.
•POP (Post Office Protocol) defines an email
server and a way to retrieve mail from it. Incoming messages are stored at a
POP server until the user logs in and downloads the messages to their computer.
The current version is POP3.
•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.
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