How to send email

Protocal	Description
SMTP	Used to send messages to an email server. It is used by an email client to send the original message and by an email server to forward a message from one server to another.
POP	Used to download messages from an email server. The message may be left on the server or deleted.
IMAP	Used to manage messages on an email server. It provides the ability to organize messages into folders on the server. Messages are typically left on the server until the user explicitly deletes them.

Description

• An email client allows a user to send and receive email messages. It can be a desktop application running on the user’s computer. It can also be an application running on a smart phone or a web-based application. In web-based email, the web server acts as the email client.
• An email server sends and receives email on behalf of the user. When a user sends an email, it stores the message until it can be forwarded to all of the recipients’ servers. When a user receives an email, it stores the message until the user logs in to download and read email.