Question

How does SMTP differ from POP3?

Answer 1

	Feature	SMTP	POP3
1.	Primary Function	It is a sending protocol used to transmit emails.	It is a Receiving protocol used to retrieve emails.
2.	Direction of Flow	Moves mail from the Client to the Server (Push Protocol).	Moves mail from the Server to the Client (Pull Protocol).
3.	Usage Stage	Used at the time of originating or sending an email.	Used at the time of accessing or downloading an email from the inbox.
4.	Server Storage	It transfers the message to the recipient's mail server for temporary storage.	It typically downloads and deletes the message from the server after it is retrieved.
5.	Accessibility	Focuses on moving mail across different networks/servers.	Designed for users who access their mail from a single device.
6.	Port Numbers	Standard port: 25; Secure port: 587.	Standard port: 110; Secure port: 995