Email And Webmail
Electronic mail, most commonly called email or e-mail since around
1993, is a method of exchanging digital messages
from an author to one or more recipients.
Email operates across the Internet or other computer networks. Some
early email systems required the author and the recipient to both be
online at the same time, in common with instant messaging.
Today's email systems are based on a store-and-forward model. Email
servers accept, forward, deliver, and store messages. Neither the
users nor their computers are required to be online simultaneously;
they need connect only briefly, typically to a mail server, for as
long as it takes to send or receive messages.
Webmail (or web-based email) is any email client implemented as a web
application running on a web server.
Examples of webmail software are
Roundcube and SquirrelMail. Examples of webmail providers are AOL
Mail, Gmail, Outlook.com and Yahoo! Mail.
Practically every webmail provider offers email access using a webmail
client, and many of them also offer email access by a desktop email
client using standard email protocols, while many internet service
providers provide a webmail client as part of the email service
included in their internet service package. ProtonMail, founded at the
CERN research facility in 2013, is a Web-based email service which
automatically provides secure encryption.
As with any web application, webmail's main advantage over the use of
a desktop email client is the ability to send and receive email
anywhere from a web browser. Its main disadvantage is the need to be
connected to the internet while using it. There exist also other
software tools to integrate parts of the webmail functionality into
the OS (e.g. creating messages directly from third party applications
via MAPI)." [wikipedia.org]