Outlook 2007
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Microsoft Outlook is a personal information manager software system from Microsoft, available as a part of the Microsoft Office and Microsoft 365 software suites. Though primarily an email client, Outlook also includes such functions as calendaring, task managing, contact managing, note-taking, journal logging and
web browsing Web navigation refers to the process of navigating a Computer network, network of web resource, information resources in the International World Wide Web Conference, World Wide Web, which is organized as hypertext or hypermedia. The user interface ...
. And has also become a popular email client for many businesses. Individuals can use Outlook as a stand-alone application; organizations can deploy it as multi-user software (through Microsoft Exchange Server or SharePoint) for such shared functions as mailboxes, calendars, folders,
data aggregation Data aggregation is the compiling of information from databases with intent to prepare combined datasets for data processing. Description The United States Geological Survey explains that, “when data are well documented, you know how and where to ...
(i.e., SharePoint lists), and appointment scheduling. Apps of Outlook for mobile platforms are also offered.


Web applications

Outlook.com Outlook.com is a webmail service that is part of the Microsoft 365 product family. It offers mail, Calendaring software, calendaring, Address book, contacts, and Task management, tasks services. Founded in 1996 by Sabeer Bhatia and Jack Smit ...
is a free
webmail Webmail (or web-based email) is an email service that can be accessed using a standard web browser. It contrasts with email service accessible through a specialised email client software. Examples of webmail providers are 1&1 Ionos, AOL Mail, G ...
version of Microsoft Outlook, using a similar user interface. Originally known as ''Hotmail'', it was rebranded as ''Outlook.com'' in 2012.
Outlook on the web Outlook on the web (previously known as Exchange Web Connect, Outlook Web Access, and Outlook Web App) is a personal information manager web app from Microsoft. It includes a web-based email client, a calendar tool, a contact manager, and a ta ...
(previously called ''Exchange Web Connect'', ''Outlook Web Access'', and ''Outlook Web App'') is a web business version of Microsoft Outlook, and is included in Office 365, Exchange Server, and
Exchange Online Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems. The first version was called Exchange Server 4.0, to position it as the successor to the related ...
.


Versions

Outlook has replaced Microsoft's previous scheduling and email clients,
Schedule+ Microsoft Schedule+ is a discontinued time management app developed by Microsoft. It was included by Microsoft in the Microsoft Office productivity suite since the Office 95 version. Since the Office 97 version, most of its functionality was incorpo ...
and Exchange Client. ''Outlook 98'' and ''Outlook 2000'' offer two configurations: *Internet Mail Only (aka IMO mode): A lighter application mode with specific emphasis on POP3 and IMAP accounts, including a lightweight Fax application. *Corporate Work group (aka CW mode): A full MAPI client with specific emphasis on Microsoft Exchange accounts.
Perpetual Perpetual, meaning "eternal", may refer to: Christianity * Perpetual curacy, a type of Christian priesthood in Anglicanism * Perpetual virginity of Mary, one of the four Marian dogmas in Catholicism Finance *Perpetual bond, a bond that pays ...
versions of Microsoft Outlook include:


Microsoft Windows


Outlook 2002

Outlook 2002 introduced these new features: * Autocomplete for email addresses * Colored categories for calendar items * Group schedules *
Hyperlink In computing, a hyperlink, or simply a link, is a digital reference to data that the user can follow or be guided by clicking or tapping. A hyperlink points to a whole document or to a specific element within a document. Hypertext is text wit ...
support in email subject lines * Native support for
Outlook.com Outlook.com is a webmail service that is part of the Microsoft 365 product family. It offers mail, Calendaring software, calendaring, Address book, contacts, and Task management, tasks services. Founded in 1996 by Sabeer Bhatia and Jack Smit ...
(formerly Hotmail) * Improved search functionality, including the ability to stop a search and resume it later * Lunar calendar support * MSN Messenger integration * Performance improvements * Preview pane improvements, including the ability to: **open hyperlinks; **respond to meeting requests; and **display email properties without opening a message * Reminder window that consolidates all reminders for appointments and tasks in a single view * Retention policies for documents and email * Security improvements, including the automatic blocking of potentially unsafe attachments and of programmatic access to information in Outlook: ** SP1 introduced the ability to view all non-
digitally signed A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature, where the prerequisites are satisfied, gives a recipient very high confidence that the message was created b ...
email or
unencrypted In cryptography, plaintext usually means unencrypted information pending input into cryptographic algorithms, usually encryption algorithms. This usually refers to data that is transmitted or stored unencrypted. Overview With the advent of comp ...
email as plain text; ** SP2 allows users to—through the
Registry Registry may refer to: Computing * Container registry, an operating-system-level virtualization registry * Domain name registry, a database of top-level internet domain names * Local Internet registry * Metadata registry, information system for re ...
—prevent the addition of new email accounts or the creation of new
Personal Storage Table In computing, a Personal Storage Table (.pst) is an open proprietary file format used to store copies of messages, calendar events, and other items within Microsoft software such as Microsoft Exchange Client, Windows Messaging, and Microsoft Outloo ...
s; ** SP3 updates the object model guard security for applications that access messages and other items. *
Smart tag SmartTAG (acronym in Malay for Sistem Membayar Automatik Rangkaian Tol or "Toll Network Automatic Payment Systems") is an on-board unit (OBU) vehicle-based device used as an electronic toll collection (ETC) system over long distances (maximum ...
s when Word is configured as the default email editor. This option was available only when the versions of Outlook and Word were the same, i.e. both were 2002.


Outlook 2003

Outlook 2003 introduced these new features: * Autocomplete suggestions for a single character * Cached Exchange mode * Colored (quick) flags * Desktop Alert * Email filtering to combat
spam Spam may refer to: * Spam (food), a canned pork meat product * Spamming, unsolicited or undesired electronic messages ** Email spam, unsolicited, undesired, or illegal email messages ** Messaging spam, spam targeting users of instant messaging ( ...
** Images in HTML mail are blocked by default to prevent spammers from determining whether an email address is active via web beacon; ** SP1 introduced the ability to block email based on country code top-level domains; ** SP2 introduced anti-phishing functionality that automatically disables hyperlinks present in spam * Expandable
distribution list A distribution list is an application of email client programs that allows a user to maintain a list of email addresses and send messages to all of them at once. This can be referred to as an ''electronic mailshot''. Sending mail using a distribu ...
s *
Information rights management Information rights management (IRM) is a subset of digital rights management (DRM), technologies that protect sensitive information from unauthorized access. It is sometimes referred to as E-DRM or Enterprise Digital Rights Management. This can ca ...
* Intrinsic support for tablet PC functionality (e.g., handwriting recognition) * Reading pane * Search folders * Unicode support


Outlook 2007

Features that debuted in Outlook 2007 include: * Attachment preview, with which the contents of attachments can be previewed before opening ** Supported file types include
Excel ExCeL London (an abbreviation for Exhibition Centre London) is an exhibition centre, international convention centre and former hospital in the Custom House area of Newham, East London. It is situated on a site on the northern quay of the ...
, PowerPoint, Visio, and Word files. If Outlook 2007 is installed on Windows Vista, then audio and video files can be previewed. If a compatible
PDF reader Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating system ...
such as
Adobe Acrobat Adobe Acrobat is a family of application software and Web services developed by Adobe Inc. to view, create, manipulate, print and manage Portable Document Format (PDF) files. The family comprises Acrobat Reader (formerly Reader), Acrobat (forme ...
8.1 is installed,
PDF Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. ...
files can also be previewed. * Auto Account Setup, which allows users to enter a username and password for an email account without entering a server name, port number, or other information * Calendar sharing improvements including the ability to export a calendar as an HTML file—for viewing by users without Outlook—and the ability to publish calendars to an external service (e.g.,
Office Web Apps Microsoft Office, or simply Office, is the former name of a family of client software, server software, and services developed by Microsoft. It was first announced by Bill Gates on August 1, 1988, at COMDEX in Las Vegas. Initially a marketi ...
) with an online provider (e.g., Microsoft account) * Colored categories with support for user roaming, which replace colored (quick) flags introduced in Outlook 2003 * Improved email spam filtering and anti-phishing features ** Postmark intends to reduce
spam Spam may refer to: * Spam (food), a canned pork meat product * Spamming, unsolicited or undesired electronic messages ** Email spam, unsolicited, undesired, or illegal email messages ** Messaging spam, spam targeting users of instant messaging ( ...
by making it difficult and time-consuming to send it * Information rights management improvements with
Windows Rights Management Services Active Directory Rights Management Services (AD RMS, known as Rights Management Services or RMS before Windows Server 2008) is a server software for information rights management shipped with Windows Server. It uses encryption and a form of selectiv ...
and managed policy compliance integration with Exchange Server 2007 * Japanese
Yomi is the Japanese word for the land of the dead (World of Darkness). According to Shinto mythology as related in ''Kojiki'', this is where the dead go in the afterlife. Once one has eaten at the hearth of Yomi it is (mostly) impossible to return ...
name support for contacts * Multiple calendars can be overlaid with one another to assess details such as potential scheduling conflicts *
Ribbon A ribbon or riband is a thin band of material, typically cloth but also plastic or sometimes metal, used primarily as decorative binding and tying. Cloth ribbons are made of natural materials such as silk, cotton, and jute and of synthetic mater ...
(Office Fluent) interface * Outlook Mobile Service support, which allowed multimedia and
SMS Short Message/Messaging Service, commonly abbreviated as SMS, is a text messaging service component of most telephone, Internet and mobile device systems. It uses standardized communication protocols that let mobile devices exchange short text ...
text messages to be sent directly to mobile phones *
Instant search Google Search (also known simply as Google) is a search engine provided by Google. Handling more than 3.5 billion searches per day, it has a 92% share of the global search engine market. It is also the most-visited website in the world. Th ...
through Windows Search, an
index Index (or its plural form indices) may refer to: Arts, entertainment, and media Fictional entities * Index (''A Certain Magical Index''), a character in the light novel series ''A Certain Magical Index'' * The Index, an item on a Halo megastru ...
-based desktop search platform ** Instant search functionality is also available in Outlook 2002 and Outlook 2003 if these versions are installed alongside Windows Search * Integrated
RSS RSS ( RDF Site Summary or Really Simple Syndication) is a web feed that allows users and applications to access updates to websites in a standardized, computer-readable format. Subscribing to RSS feeds can allow a user to keep track of many di ...
aggregation * Support for Windows SideShow with the introduction of a calendar
gadget A gadget is a mechanical device or any ingenious article. Gadgets are sometimes referred to as '' gizmos''. History The etymology of the word is disputed. The word first appears as reference to an 18th-century tool in glassmaking that was develo ...
* To-Do Bar that consolidates calendar information, flagged email, and tasks from OneNote 2007, Outlook 2007,
Project A project is any undertaking, carried out individually or collaboratively and possibly involving research or design, that is carefully planned to achieve a particular goal. An alternative view sees a project managerially as a sequence of even ...
2007, and
Windows SharePoint Services SharePoint is a web-based collaborative platform that integrates natively with Microsoft Office. Launched in 2001, SharePoint is primarily sold as a document management and storage system, but the product is highly configurable and its usage v ...
3.0 websites within a central location. * The ability to export items as PDF or XPS files * Unified messaging support with Exchange Server 2007, including features such as missed-call notifications, and voicemail with voicemail preview and Windows Media Player * Word 2007 replaces Internet Explorer as the default viewer for
HTML email HTML email is the use of a subset of HTML to provide formatting and semantic markup capabilities in email that are not available with plain text: Text can be linked without displaying a URL, or breaking long URLs into multiple pieces. Text is ...
, and becomes the default email editor in this and all subsequent versions.


Outlook 2010

Features that debuted in Outlook 2010 include: * Additional command-line switches * An improved conversation view that groups messages based on different criteria regardless of originating folders * IMAP messages are sent to the Deleted Items folder, eliminating the need to mark messages for future deletion * Notification when an email is about to be sent without a subject * Quick Steps, individual collections of commands that allow users to perform multiple actions simultaneously *
Ribbon A ribbon or riband is a thin band of material, typically cloth but also plastic or sometimes metal, used primarily as decorative binding and tying. Cloth ribbons are made of natural materials such as silk, cotton, and jute and of synthetic mater ...
interface in all views * Search Tools contextual tab on the ribbon that appears when performing searches and that includes basic or advanced criteria filters * Social Connector to connect to various social networks and aggregate appointments, contacts, communication history, and file attachments * Spell check-in additional areas of the user interface * Support for multiple Exchange accounts in a single Outlook profile * The ability to schedule a meeting with a contact by replying to an email message * To-Do Bar enhancements including visual indicators for conflicts and unanswered meeting requests * Voicemail transcripts for Unified Messaging communications * Zooming user interface for calendar and mail views


Outlook 2013

Features that debuted in Outlook 2013, which was released on January 29, 2013, include: *
Attachment Attachment may refer to: Entertainment * ''Attachments'' (novel), a 2011 novel by Rainbow Rowell * ''Attachments'' (TV series), a BBC comedy-drama that ran from 2000 to 2002 Law * Attachment (law), a means of collecting a legal judgment by lev ...
reminder *
Exchange ActiveSync Exchange ActiveSync (commonly known as EAS) is a proprietary protocol designed for the synchronization of email, contacts, calendar, tasks, and notes from a messaging server to a smartphone or other mobile devices. The protocol also provides mobi ...
(EAS) * Add-in resiliency * Cached Exchange mode improvements * IMAP improvements * Outlook data file (
.ost In computing, a Personal Storage Table (.pst) is an open proprietary file format used to store copies of messages, calendar events, and other items within Microsoft software such as Microsoft Exchange Client, Windows Messaging, and Microsoft Outlook ...
) compression * People hub * Startup performance improvements


Outlook 2016

Features that debuted in Outlook 2016, include: *
Attachment Attachment may refer to: Entertainment * ''Attachments'' (novel), a 2011 novel by Rainbow Rowell * ''Attachments'' (TV series), a BBC comedy-drama that ran from 2000 to 2002 Law * Attachment (law), a means of collecting a legal judgment by lev ...
link to cloud resource * Groups redesign * Search cloud * Clutter folder *
Email Address Internationalization An email address identifies an email box to which messages are delivered. While early messaging systems used a variety of formats for addressing, today, email addresses follow a set of specific rules originally standardized by the Internet Engineer ...
* Scalable Vector Graphics


Outlook 2019

Features that debuted in Outlook 2019, include: * Focused Inbox * Add multiple time zones * Listen to your emails * Easier email sorting * Automatic download of cloud attachments * True Dark Mode (version 1907 onward)


Macintosh

Microsoft also released several versions of Outlook for
classic Mac OS Mac OS (originally System Software; retronym: Classic Mac OS) is the series of operating systems developed for the Macintosh family of personal computers by Apple Computer from 1984 to 2001, starting with System 1 and ending with Mac OS 9. The ...
, though it was only for use with Exchange servers. It was not provided as a component of Microsoft Office for Mac but instead made available to users from administrators or by download. The final version was Outlook for Mac 2001, which was fairly similar to Outlook 2000 and 2002 apart from being exclusively for Exchange users. Microsoft Entourage was introduced as an Outlook-like application for Mac OS in Office 2001, but it lacked Exchange connectivity. Partial support for Exchange server became available natively in Mac OS X with Entourage 2004 Service Pack 2. Entourage is not directly equivalent to Outlook in terms of design or operation; rather, it is a distinct application that has several overlapping features including Exchange client capabilities. Somewhat improved Exchange support was added in Entourage 2008 Web Services Edition. Entourage was replaced by Outlook for Mac 2011, which features greater compatibility and parity with Outlook for Windows than Entourage offered. It is the first native version of Outlook for MacOS. Outlook 2011 initially supported Mac OS X's Sync Services only for contacts, not events, tasks or notes. It also does not have a Project Manager equivalent to that in Entourage. With
Service Pack In computing, a service pack comprises a collection of updates, fixes, or enhancements to a software program delivered in the form of a single installable package. Companies often release a service pack when the number of individual patches to a ...
1 (v 14.1.0), published on April 12, 2011, Outlook can now sync calendar, notes and tasks with Exchange 2007 and Exchange 2010. On October 31, 2014, Microsoft released Outlook for Mac (v15.3 build 141024) with Office 365 (a software as a service licensing program that makes Office programs available as soon as they are developed). Outlook for Mac 15.3 improves upon its predecessors with: * Better performance and reliability as a result of a new threading model and database improvements. * A new modern user interface with improved scrolling and agility when switching between Ribbon tabs. * Online archive support for searching Exchange (online or on-premises) archived mail. * Master Category List support and enhancements delivering access to category lists (name and color) and sync between Mac, Microsoft Windows and OWA clients. * Office 365 push email support for real-time email delivery. * Faster first-run and email download experience with improved Exchange Web Services syncing. Th
"New Outlook for Mac" client
included with version 16.42 and above, became available for "Early Insider" testers in the fall of 2019, with a public "Insider" debut in October 2020. It requires macOS 10.14 or greater and introduces a redesigned interface with significantly changed internals, including native search within the client that no longer depends on macOS Spotlight. Some Outlook features are still missing from the New Outlook client as it continues in development. To date, the Macintosh client has never had the capability of syncing Contact Groups/Personal Distribution Lists from Exchange, Microsoft 365 or Outlook.com accounts, something that the Windows and web clients have always supported. A UserVoice post created in December 2019 suggesting that the missing functionality be added has shown a "Planned" tag since October 2020.


Phones and tablets

First released in April 2014 by the venture capital-backed
startup A startup or start-up is a company or project undertaken by an entrepreneur to seek, develop, and validate a scalable business model. While entrepreneurship refers to all new businesses, including self-employment and businesses that never intend t ...
Acompli Acompli is a discontinued mobile app that allowed for user interaction with email messages as well as management of multiple email accounts in one programme. In addition, the tool also organized one's calendar and shared files. This application pr ...
, the company was acquired by Microsoft in December 2014. On January 29, 2015, Acompli was re-branded as Outlook Mobile—sharing its name with the Microsoft Outlook desktop personal information manager and
Outlook.com Outlook.com is a webmail service that is part of the Microsoft 365 product family. It offers mail, Calendaring software, calendaring, Address book, contacts, and Task management, tasks services. Founded in 1996 by Sabeer Bhatia and Jack Smit ...
email service. In January 2015, Microsoft released Outlook for phones and for tablets (v1.3 build) with Office 365. This was the first Outlook for these platforms with email, calendar, and contacts. On February 4, 2015, Microsoft acquired
Sunrise Calendar Sunrise is a discontinued electronic calendar application for mobile and desktop. The service was launched in 2013 by designers Pierre Valade and Jeremy Le Van. In October 2015, Microsoft announced that they had merged the Sunrise Calendar team in ...
; on September 13, 2016, Sunrise ceased to operate, and an update was released to Outlook Mobile that contained enhancements to its calendar functions. Similar to its desktop counterpart, Outlook mobile offers an aggregation of attachments and files stored on
cloud storage Cloud storage is a model of computer data storage in which the digital data is stored in logical pools, said to be on "the cloud". The physical storage spans multiple servers (sometimes in multiple locations), and the physical environment is t ...
platforms; a "focused inbox" highlights messages from frequent contacts, and calendar events, files, and locations can be embedded in messages without switching apps. The app supports a number of email platforms and services, including
Outlook.com Outlook.com is a webmail service that is part of the Microsoft 365 product family. It offers mail, Calendaring software, calendaring, Address book, contacts, and Task management, tasks services. Founded in 1996 by Sabeer Bhatia and Jack Smit ...
, Microsoft Exchange and Google Workspace (formerly G Suite) among others. Outlook mobile is designed to consolidate functionality that would normally be found in separate apps on mobile devices, similarly to personal information managers on personal computers. is designed around four "hubs" for different tasks, including "Mail", "Calendar," "Files" and "People". The "People" hub lists frequently and recently used contacts and aggregates recent communications with them, and the "Files" hub aggregates recent attachments from messages, and can also integrate with other online storage services such as Dropbox, Google Drive, and OneDrive. To facility indexing of content for search and other features, emails and other information are stored on external servers. Outlook mobile supports a large number of different e-mail services and platforms, including Exchange, iCloud, GMail, Google Workspace (formerly G Suite),
Outlook.com Outlook.com is a webmail service that is part of the Microsoft 365 product family. It offers mail, Calendaring software, calendaring, Address book, contacts, and Task management, tasks services. Founded in 1996 by Sabeer Bhatia and Jack Smit ...
, and Yahoo! Mail. The app supports multiple email accounts at once. Emails are divided into two inboxes: the "Focused" inbox displays messages of high importance, and those from frequent contacts. All other messages are displayed within an "Other" section. Files, locations, and calendar events can be embedded into email messages. Swiping gestures can be used for deleting messages. Like the desktop Outlook, Outlook mobile allows users to see appointment details, respond to Exchange meeting invites, and schedule meetings. It also incorporates the three-day view and "Interesting Calendars" features from Sunrise. Files in the Files tab are not stored offline; they require Internet access to view.


Security

Outlook mobile temporarily stores and indexes user data (including email, attachments, calendar information, and contacts), along with login credentials, in a "secure" form on
Microsoft Azure Microsoft Azure, often referred to as Azure ( , ), is a cloud computing platform operated by Microsoft for application management via around the world-distributed data centers. Microsoft Azure has multiple capabilities such as software as a ...
servers located in the United States. On Exchange accounts, these servers identify as a single
Exchange ActiveSync Exchange ActiveSync (commonly known as EAS) is a proprietary protocol designed for the synchronization of email, contacts, calendar, tasks, and notes from a messaging server to a smartphone or other mobile devices. The protocol also provides mobi ...
user in order to fetch e-mail. Additionally, the app does not support
mobile device management Mobile device management (MDM) is the administration of mobile devices, such as smartphones, tablet computers, and laptops. MDM is usually implemented with the use of a third-party product that has management features for particular vendors of m ...
, nor allows administrators to control how third-party cloud storage services are used with the app to interact with their users. Concerns surrounding these security issues have prompted some firms, including the European Parliament, to block the app on their Exchange servers. Microsoft maintains a separate, pre-existing
Outlook Web Access Outlook on the web (previously known as Exchange Web Connect, Outlook Web Access, and Outlook Web App) is a personal information manager web app from Microsoft. It includes a web-based email client, a calendar tool, a contact manager, and a ta ...
app for Android and iOS.


Outlook Groups

Outlook Groups was a mobile application for Windows Phone, Windows 10 Mobile,
Android Android may refer to: Science and technology * Android (robot), a humanoid robot or synthetic organism designed to imitate a human * Android (operating system), Google's mobile operating system ** Bugdroid, a Google mascot sometimes referred to ...
and iOS that could be used with an Office 365 domain Microsoft Account, e.g. a work or school account. It is designed to take existing email threads and turn them into a group-style conversation. The app lets users create groups, mention their contacts, share Office documents via OneDrive and work on them together, and participate in an email conversation. The app also allows the finding and joining of other Outlook Groups. It was tested internally at Microsoft and launched September 18, 2015 for Windows Phone 8.1 and Windows 10 Mobile users. After its initial launch on Microsoft's own platforms they launched the application for
Android Android may refer to: Science and technology * Android (robot), a humanoid robot or synthetic organism designed to imitate a human * Android (operating system), Google's mobile operating system ** Bugdroid, a Google mascot sometimes referred to ...
and iOS on September 23, 2015. Outlook Groups was updated on September 30, 2015, that introduced a deep linking feature as well as fixing a bug that blocked the "send" button from working. In March 2016 Microsoft added the ability to attach multiple images, and the most recently used document to group messages as well as the option to delete conversations within the application programme. Outlook Groups was retired by Microsoft on May 1, 2018. The functionality was replaced by adding the "Groups node" to the folder list within the Outlook mobile app.


Internet standards compliance


HTML rendering

Outlook 2007 was the first Outlook to switch from Internet Explorer rendering engine to
Microsoft Word 2007 Microsoft Office 2007 (codenamed Office 12) is an office suite for Windows, developed and published by Microsoft. It was officially revealed on March 9, 2006 and was the 12th version of Microsoft Office. It was released to manufacturing on Nove ...
's. This meant that HTML and
Cascading Style Sheets Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS is a cornerstone techno ...
(CSS) items not handled by Word were no longer supported. On the other hand, HTML messages composed in Word look as they appeared to the author. This affects publishing newsletters and reports, because they frequently use intricate HTML and CSS to form their layout. For example, forms can no longer be embedded in an Outlook email.


Support of CSS properties and HTML attributes

Outlook for Windows has very limited CSS support compared to various other e-mail clients. Neither CSS1 (1996) nor CSS2 (1998) specifications are fully implemented and many CSS properties can only to be used with certain HTML elements for the desired effect. Some HTML attributes help achieve proper rendering of e-mails in Outlook, but most of these attributes are already deprecated in the HTML 4.0 specifications (1997). In order to achieve the best compatibility with Outlook, most HTML e-mails are created using multiple boxed tables, as the table element and its sub-elements support the width and height property in Outlook. No improvements have been made towards a more standards-compliant email client since the release of Outlook 2007.


Transport Neutral Encapsulation Format

Outlook and Exchange Server internally handle messages, appointments, and items as objects in a data model which is derived from the old proprietary Microsoft Mail system, the
Rich Text Format ) As an example, the following RTF code would be rendered as follows: This is some bold text. Character encoding A standard RTF file can only consist of 7-bit ASCII characters, but can use escape sequences to encode other characters. Th ...
from Microsoft Word and the complex OLE general data model. When these programs interface with other protocols such as the various Internet and
X.400 X.400 is a suite of ITU-T Recommendations that defines the ITU-T Message Handling System (MHS). At one time, the designers of X.400 were expecting it to be the predominant form of email, but this role has been taken by the SMTP-based Internet e-m ...
protocols, they try to map this internal model onto those protocols in a way that can be reversed if the ultimate recipient is also running Outlook or Exchange.Transport-Neutral Encapsulation Format (TNEF) , Outlook 2010
''Microsoft''. 28 July 2014. Retrieved 29 May 2020.
This focus on the possibility that emails and other items will ultimately be converted back to Microsoft Mail format is so extreme that if Outlook/Exchange cannot figure out a way to encode the complete data in the standard format, it simply encodes the entire message/item in a proprietary binary format called
Transport Neutral Encapsulation Format Transport Neutral Encapsulation Format or TNEF is a proprietary email attachment format used by Microsoft Outlook and Microsoft Exchange Server. An attached file with TNEF encoding is most often named ''winmail.dat'' or ''win.dat'', and has a MIM ...
(TNEF) and sends this as an attached file (usually named "winmail.dat") to an otherwise incomplete rendering of the mail/item. If the recipient is Outlook/Exchange it can simply discard the incomplete outer message and use the encapsulated data directly, but if the recipient is any other program, the message received will be incomplete because the data in the TNEF attachment will be of little use without the Microsoft software for which it was created. As a workaround, numerous tools for partially decoding TNEF files exist.


Calendar compatibility

Outlook does not fully support data and syncing specifications for calendaring and contacts, such as iCalendar, CalDAV, SyncML, and vCard 3.0. Outlook 2007 claims to be fully iCalendar compliant; however, it does not support all core objects, such as VTODO or VJOURNAL. Also, Outlook supports vCard 2.1 and does not support multiple contacts in the vCard format as a single file. Outlook has also been criticized for having proprietary "Outlook extensions" to these Internet standards.


.msg format

Outlook (both the web version and recent non-web versions) promotes the usage of a proprietary .msg format to save individual emails, instead of the standard
.eml Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices. Email was thus conceived as the electronic (digital) version of, or counterpart to, mail, at a time when "mail" meant ...
format. Messages use .msg by default when saved to disk or forwarded as attachments. Compatibility with past or future Outlook versions is not documented nor guaranteed; the format saw over 10 versions released since version 1 in 2008. The standard .eml format replicates the format of emails as used for transmission and is therefore compatible with any email client which uses the normal protocols. Standard-compliant email clients, like Mozilla Thunderbird, use additional headers to store software-specific information related e.g. to the local storage of the email, while keeping the file plain-text, so that it can be read in any text editor and searched or indexed like any document by any other software.


Appearance

Outlook uses a desktop metaphor including a closed envelope for unread messages, an open envelope for read messages, and a paperclip to show attachments.


Security concerns

As part of its Trustworthy Computing initiative, Microsoft took corrective steps to fix Outlook's reputation in Office Outlook 2003. Among the most publicized security features are that Office Outlook 2003 does not automatically load images in HTML emails or permit opening executable attachments by default, and includes a built-in Junk Mail filter. Service Pack 2 has augmented these features and adds an anti- phishing filter.


Outlook add-ins

Outlook add-ins are small additional programs for the Microsoft Outlook application, mainly purposed to add new functional capabilities into Outlook and automate various routine operations. The term also refers to programs where the main function is to work on Outlook files, such as
synchronization Synchronization is the coordination of events to operate a system in unison. For example, the conductor of an orchestra keeps the orchestra synchronized or ''in time''. Systems that operate with all parts in synchrony are said to be synchronou ...
or backup utilities. Outlook add-ins may be developed in
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or third-party tools such as Add-in Express. Outlook add-ins are not supported in
Outlook Web App Outlook on the web (previously known as Exchange Web Connect, Outlook Web Access, and Outlook Web App) is a personal information manager web app from Microsoft. It includes a web-based email client, a calendar tool, a contact manager, and a ta ...
. From Outlook 97 on, Exchange Client Extensions are supported in Outlook. Outlook 2000 and later support specific
COM Com or COM may refer to: Computing * COM (hardware interface), a serial port interface on IBM PC-compatible computers * COM file, or .com file, short for "command", a file extension for an executable file in MS-DOS * .com, an Internet top-level d ...
components called Outlook Add-Ins. The exact supported features (such as .NET components) for later generations were extended with each release.


SalesforceIQ Inbox for Outlook

In March 2016, Salesforce announced that its relationship intelligence platform, SalesforceIQ, would be able to seamlessly integrate with Outlook. SalesforceIQ works from inside the Outlook inbox providing data from CRM, email, and customer social profiles. It also provides recommendations within the inbox on various aspects like appointment scheduling, contacts, responses, etc.


Hotmail Connector

''Microsoft Outlook Hotmail Connector'' (formerly ''Microsoft Office Outlook Connector''), is a discontinued and defunct free add-in for Microsoft Outlook 2003, 2007 and 2010, intended to integrate
Outlook.com Outlook.com is a webmail service that is part of the Microsoft 365 product family. It offers mail, Calendaring software, calendaring, Address book, contacts, and Task management, tasks services. Founded in 1996 by Sabeer Bhatia and Jack Smit ...
(formerly Hotmail) into Microsoft Outlook. It uses
DeltaSync DeltaSync was a proprietary Microsoft communications protocol for synchronizing web services with offline clients. It was switched off by Microsoft on 30 June 2016. Windows Live Hotmail was connected to offline clients using DeltaSync; Outlook C ...
, a proprietary Microsoft communications protocol that Hotmail formerly used. In version 12, access to tasks and notes and online synchronization with MSN Calendar is only available to MSN subscribers of paid premium accounts. Version 12.1, released in December 2008 as an optional upgrade, uses Windows Live Calendar instead of the former MSN Calendar. This meant that calendar features became free for all users, except for task synchronization which became unavailable. In April 2008, version 12.1 became a required upgrade to continue using the service as part of a migration from MSN Calendar to Windows Live Calendar. Microsoft Outlook 2013 and later have intrinsic support for accessing Outlook.com and its calendar over the
Exchange ActiveSync Exchange ActiveSync (commonly known as EAS) is a proprietary protocol designed for the synchronization of email, contacts, calendar, tasks, and notes from a messaging server to a smartphone or other mobile devices. The protocol also provides mobi ...
(EAS) protocol, while older versions of Microsoft Outlook can read and synchronize Outlook.com emails over the IMAP protocol.


Social Connector

''Outlook Social Connector'' was a free add-in for Microsoft Outlook 2003 and 2007 by Microsoft that allowed integration of social networks such as Facebook, LinkedIn and Windows Live Messenger into Microsoft Outlook. It was first introduced on November 18, 2009. Starting with Microsoft Office 2010, Outlook Social Connector is an integral part of Outlook.


CardDAV and CalDAV Connector

Since Microsoft Outlook does not support CalDAV and CardDAV protocol along the way, various third-party software vendors developed Outlook add-ins to enable users synchronizing with CalDAV and CardDAV servers. CalConnect has a list of software that enable users to synchronize their calendars with CalDAV servers/contacts with CardDAV servers.


Importing from other email clients

Traditionally, Outlook supported importing messages from Outlook Express and Lotus Notes. In addition, Microsoft Outlook supports POP3 and IMAP protocols, enabling users to import emails from servers that support these protocols. Microsoft Hotmail Connector add-in (described above) helps importing emails from Hotmail accounts. Outlook 2013 later integrated the functionality of this add-in and added the ability to import email (as well as a calendar) through
Exchange ActiveSync Exchange ActiveSync (commonly known as EAS) is a proprietary protocol designed for the synchronization of email, contacts, calendar, tasks, and notes from a messaging server to a smartphone or other mobile devices. The protocol also provides mobi ...
protocol. There are some ways to get the emails from Thunderbird; the first is to use a tool that can convert a Thunderbird folder to a format that can be imported from Outlook Express. This method must be processed folder by folder. The other method is to use a couple of free tools that keep the original folder structure. If Exchange is available, an easier method is to connect the old mail client (Thunderbird) to Exchange using IMAP, and upload the original mail from the client to the Exchange account.


See also

* Address book *
Calendar (Apple) Calendar is a personal calendar app made by Apple Inc. that runs on both the macOS desktop operating system and the iOS mobile operating system. It offers online cloud backup of calendars using Apple's iCloud service, or can synchronize with ...
—iCal *
Comparison of email clients The following tables compare general and technical features of notable email client programs. General Basic general information about the clients: creator/company, O/S, licence, & interface. Clients listed on a light purple background are no long ...
* Comparison of feed aggregators * Comparison of office suites *
GNOME Evolution GNOME Evolution (formerly Novell Evolution and Ximian Evolution, prior to Novell's 2003 acquisition of Ximian) is the official personal information manager for GNOME. It has been an official part of GNOME since Evolution 2.0 was included with th ...
* Kontact * List of personal information managers *
Personal Storage Table In computing, a Personal Storage Table (.pst) is an open proprietary file format used to store copies of messages, calendar events, and other items within Microsoft software such as Microsoft Exchange Client, Windows Messaging, and Microsoft Outloo ...
(.pst file) *
Windows Contacts Windows Contacts is a contact manager that is included in Windows Vista, Windows 7, Windows 8, Windows 10, and Windows 11. It replaced but retains most of the functionality of Windows Address Book and worked with Windows Live Mail and the Vista v ...


References


Notes


Citations


External links

*
Outlook Developer Center
{{Authority control 1997 software Calendaring software Computer-related introductions in 1997 Outlook Outlook News aggregator software Personal information managers Windows email clients Android (operating system) software IOS software