
1) Email client 2) Web application
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https://www.crosswordclues.com/clue/webmail

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 ...
Found on
http://en.wikipedia.org/wiki/Webmail

A method used to access e-mail messages through a web browser using HTTP.
Found on
http://www.encyclo.co.uk/local/20660
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