Outlook Web App
|This article may need to be rewritten entirely to comply with Wikipedia's quality standards. (December 2011)|
||It has been suggested that this article be merged into Microsoft Exchange Server. (Discuss) Proposed since December 2011.|
Outlook Web Access on Internet Explorer
|Type||Webmail, calendaring software|
|License||Part of Exchange Server or Microsoft Office 365; licensing terms tallies|
Outlook Web App (OWA), originally called Outlook Web Access and before that Exchange Web Connect (EWC), is a webmail service of Microsoft Exchange Server 5.0 and later. Outlook Web App comes as a part of Microsoft Exchange Server or Microsoft Office 365.
Outlook Web App is used to access e-mail (including support for S/MIME), calendars, contacts, tasks, documents (used with SharePoint or in 2010, Office Web Apps), and other mailbox content when access to the Microsoft Outlook desktop application is unavailable. In the Exchange 2007 release, OWA also offers read-only access to documents stored in Microsoft SharePoint sites and network (UNC) shares. Microsoft provides Outlook Web App as part of Exchange Server to allow users to connect remotely via a web browser. Some of the functionality in Outlook is also available in this web "look-alike". The most important difference is that Microsoft Outlook allows users to work with e-mail, calendars, etc., even when an internet connection is unavailable, whereas OWA requires an internet connection to function.
In all versions of Exchange, the "OWA Light" user interface (UI) is rendered for other browsers. While the basic interface did not support search with Exchange Server 2003, the UI has been reworked for Exchange Server 2007. On Exchange Server 2007, OWA Light now supports search for mail items, and managing contacts and the calendar has also been improved. On Outlook Web Access 2010, a user may now connect email accounts to one's Outlook Web Access. That feature is most ignored due to professional uses of Outlook Web Access.
On Exchange 2007, a user would get a pop-up that a new message was sent, but this was dropped on Outlook Web Access 2010.
Comparison to alternative web-based groupware 
In previous versions, OWA provided a limited user experience to those not using Microsoft's Internet Explorer. As of OWA 2010 (provided with Exchange 2010), browser support for Firefox, Chrome, and Safari browsers is available. However, Microsoft still purposely excludes user agents that do not match its list of "supported browsers" from using the full version of the application. Some popular browser/OS combinations, such as Chrome on Linux, are thereby excluded.
Several alternatives to OWA/Exchange exist. In addition, many businesses may opt for either hosted options provided by familiar names like Google, Microsoft, or Yahoo! or may install local alternatives to Exchange server such as Zimbra, Kolab, Zarafa, or Scalix.
Use of OWA handheld/smart phone mail 
OWA is used for several 3rd party clients to MS Exchange Server.
The first component to allow client-side scripts to issue HTTP requests (XMLHTTP) was originally written by the Outlook Web Access team. It soon became a part of Internet Explorer 5.0. Renamed XmlHttpRequest and standardized by the World Wide Web Consortium, it has since become one of the cornerstones of the Ajax technology used to build advanced web applications.
There are multiple ways to log in to Outlook Web App. On Office 365, one will need to put in one's Microsoft Online Services ID. On regular Exchange servers, one will be greeted to log in by user domain\username or either username@domain. One must have the correct server to log in.
See also 
- "Exchange 2000 Outlook Web Access". Microsoft Corporation. 2002. Retrieved 2009-11-22.
- "Improvements in Outlook Web Access 2003". Microsoft Corporation. 2006. Retrieved 2009-11-22.
- "Client Features in Outlook Web Access". Microsoft Corporation. 2008. Retrieved 2009-11-22.
- "Outlook Web App Supported Browsers". Microsoft Corporation. 2009. Retrieved 2009-11-22.
- "Microsoft Office Outlook Web Access". Microsoft Corporation. 2007. Retrieved 2009-05-27.
- "Client Features in Outlook Web Access". Microsoft Corporation. 2008-03-14. Retrieved 2009-05-27.
- "Outlook Web App Supported Browserss". Microsoft Corporation. Retrieved 2010-04-21.
- "The XMLHttpRequest Object". W3C. 15 April 2008. Retrieved 2008-10-01.