Webmail

web-based emailweb mailWeb-based e-mailweb-based email clientwebmail servicee-mail provideremail servicemailonline email serviceonline mail
Webmail (or web-based email) is any email client implemented as a web application running on a web server.wikipedia
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Web application

web-basedweb applicationsweb app
Webmail (or web-based email) is any email client implemented as a web application running on a web server.
Common web applications include webmail, online retail sales, online banking, and online auction.

SquirrelMail

Examples of webmail software are Roundcube and SquirrelMail.
SquirrelMail is a project that provides both a web-based email client and a proxy server for the IMAP protocol.

Comparison of webmail providers

webmail provider
Examples of webmail providers are AOL Mail, Gmail, Outlook.com/Hotmail.com, Rackspace Email, Yahoo! Mail and IceWarp Mail Server.
The following tables compare general and technical information for a number of notable webmail providers who offer a web interface in English.

AOL Mail

AOL email accountAOL Webmail
Examples of webmail providers are AOL Mail, Gmail, Outlook.com/Hotmail.com, Rackspace Email, Yahoo! Mail and IceWarp Mail Server.
AOL Mail (stylized as AOL Mail.) is a free web-based email service provided by AOL, a division of Verizon Communications.

Yahoo! Mail

Yahoo MailYahoo!email
Examples of webmail providers are AOL Mail, Gmail, Outlook.com/Hotmail.com, Rackspace Email, Yahoo! Mail and IceWarp Mail Server.
Since 2015, its webmail client also supports managing non-Yahoo e-mail accounts.

Outlook.com

HotmailWindows Live HotmailPeople
Examples of webmail providers are AOL Mail, Gmail, Outlook.com/Hotmail.com, Rackspace Email, Yahoo! Mail and IceWarp Mail Server. Hotmail and Four11's RocketMail both launched in 1996 as free services and immediately became very popular.
Outlook.com is a web-based suite of webmail, contacts, tasks, and calendaring services from Microsoft.

RocketMail

Four11's RocketMailFour11 Corporation
Hotmail and Four11's RocketMail both launched in 1996 as free services and immediately became very popular.
RocketMail was one of the first major, free webmail services.

Simple Mail Transfer Protocol

SMTP8BITMIMEemail protocol
Proprietary systems such as Microsoft Exchange and IBM Notes and webmail systems such as Outlook.com, Gmail and Yahoo! Mail may use non-standard protocols internally, but all use SMTP when sending to or receiving email from outside their own systems.

Roundcube

Examples of webmail software are Roundcube and SquirrelMail.

Internet service provider

ISPInternet service providersISPs
Many webmail providers 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.
The task is typically accomplished by implementing Simple Mail Transfer Protocol (SMTP) and possibly providing access to messages through Internet Message Access Protocol (IMAP), the Post Office Protocol, Webmail, or a proprietary protocol.

Gmail

Google MailGoogle GmailCriticism of Gmail
Examples of webmail providers are AOL Mail, Gmail, Outlook.com/Hotmail.com, Rackspace Email, Yahoo! Mail and IceWarp Mail Server.
In September 2006, Forbes declared Gmail to be the best webmail application for small businesses.

Cc:Mail

Lotus cc:MailIBM Lotus cc:Mail
In the United States, Matt Mankins wrote "Webex", and Bill Fitler, while at Lotus cc:Mail, began working on an implementation which he demonstrated publicly at Lotusphere on January 24, 1995.
cc:Mail provided the first commercial web-based email product in 1995.

Rackspace Email

Examples of webmail providers are AOL Mail, Gmail, Outlook.com/Hotmail.com, Rackspace Email, Yahoo! Mail and IceWarp Mail Server.

Internet Message Access Protocol

IMAPIMAP4IMAP server
The use of both a webmail client and a desktop client using the IMAP4 protocol allows the contents of the mailbox to be consistently displayed in both the webmail and desktop clients and any action the user performs on messages in one interface will be reflected when email is accessed via the other interface.
Many webmail service providers such as Gmail, Outlook.com and Yahoo! Mail also provide support for both IMAP and POP3.

Comparison of mail servers

Comparison of MailServerscontinued into the 2010sMail servers with DMARC
The market for webmail application software has continued into the 2010s.

Comparison of email clients

Comparison of e-mail clientsList of email clientse-mail clients

Oracle Communications Messaging Server

Sun Java System Messaging ServeriPlanet Messaging ServerNetscape Messaging Server
In some cases, webmail application software is developed in-house by the organizations running and managing the application, and in some cases it is obtained from software companies that develop and sell such applications, usually as part of an integrated mail server package (an early example being Netscape Messaging Server ).
Messaging Server also includes a web application called Convergence, which provides webmail as well as web-based access to other Communications Suite functionality such as calendaring and instant messaging.

Email hosting service

E-mail hosting serviceE-mail hostingEmail hosting
Email hosting services usually offer premium email as opposed to advertisement-supported free email or free webmail.

Email client

e-mail clientmail user agente-mail
Webmail (or web-based email) is any email client implemented as a web application running on a web server. Many webmail providers 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. 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.

Web server

web serverswebserverHTTP server
Webmail (or web-based email) is any email client implemented as a web application running on a web server.

IceWarp Mail Server

IceWarp
Examples of webmail providers are AOL Mail, Gmail, Outlook.com/Hotmail.com, Rackspace Email, Yahoo! Mail and IceWarp Mail Server.

Desktop computer

desktopdesktopsdesktop computers
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.

Web browser

browserweb browsersinternet browser
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.

CERN

European Organization for Nuclear ResearchEuropean Organization for Nuclear Research (CERN)European Laboratory for Particle Physics
The first Web Mail implementation was developed at CERN in 1993 by Phillip Hallam-Baker as a test of the HTTP protocol stack, but was not developed further.