Microsoft Outlook has replaced Microsoft's previous scheduling and mail program,
Versions of Microsoft Outlook include:
|Outlook for MS-DOS
Exchange Server 5.5
|Outlook for Windows 3.1x
||Bundled with Exchange Server 5.5
|Outlook for Macintosh
||Bundled with Exchange Server 5.5
||January 16, 1997
Office 97 and bundled with Exchange Server 5.5
||June 21, 1998
||Freely distributed with books and magazines for coping with newest Internet standard such as
 Outlook 98 setup was based on
Active Setup which also installed
Internet Explorer 4.
||June 27, 1999
Office 2000 and bundled with Exchange 2000 Server.
||May 31, 2001
|Office Outlook 2003
||November 20, 2003
Office 2003 (incl. Standard Edition for Students and Teachers) and bundled with Exchange Server 2003
|Office Outlook 2007
||January 27, 2007
Office 2007, except Office Home and Student edition
||July 15, 2010
Office 2010 Home and Business, Standard, Professional and Professional Plus
|Outlook 2011 for Mac
||October 26, 2010
Office for Mac 2011 Home and Business
||January 29, 2013
Office 2013, except Home & Student edition
|Outlook for Mac
||October 31, 2014
Office 365, except some commercial editions
|Outlook for Phones & Tablets
Office 365, except some commercial editions
Includes IOS (Apple O/S) and Android (Google O/S) Support
||September 22, 2015
Outlook 98 and Outlook 2000 offer two configurations:
- Internet Mail Only or IMO mode: A lighter application mode with specific emphasis on
POP3 accounts and
IMAP accounts and including a lightweight Fax application.
- Corporate Workgroup or CW mode: A full
MAPI client with specific emphasis on Microsoft Exchange accounts.
Outlook 2002 introduced the following new features:
AutoComplete for email addresses
- Colored categories for calendar items
- Group schedules
- Hyperlink support in email subject lines
- Native support for
Outlook.com (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
Smart tags when Word is configured as the default email editor
Outlook 2003 introduced the following new features:
The main Outlook 2007 interface with its
Outlook 2007 with options for text message composition. The left-hand side depicts a preview of how the message will appear on the recipient's phone.
Features that debuted in Outlook 2007 include:
- Attachment preview, with which the contents of attachments can be previewed before opening
- 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) with an online provider (e.g.,
- 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 by making it difficult and time consuming to send it
- Information rights management improvements with
Windows Rights Management Services and managed policy compliance integration with Exchange Server 2007
Yomi name support for contacts
- Multiple calendars can be overlaid with one another to assess details such as potential scheduling conflicts
Ribbon (Office Fluent) interface
- Outlook Mobile Service support, which allowed multimedia and
text messages to be sent directly to
Instant search through
Windows Search, an
desktop search platform
- Instant search functionality is also available in Outlook 2002 and Outlook 2003 if these versions are installed alongside Windows Search
- Support for
Windows SideShow with the introduction of a calendar
- To-Do Bar that consolidates calendar information, flagged email, and tasks from OneNote 2007, Outlook 2007, Project 2007, and
Windows SharePoint Services 3.0
websites within a central location.
- The ability to export items as PDF or
Unified messaging support with Exchange Server 2007 with features such as missed call notifications, and
voicemail with voicemail preview with
Windows Media Player
- Word 2007 replaces
Internet Explorer as the default viewer for HTML email
Features that debuted in Outlook 2010 include:
- 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 email is about to be sent without a subject
- Quick Steps, individual collections of commands that allow users to perform multiple actions simultaneously
- Ribbon 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
- Voice mail transcripts for Unified Messaging communications
Zooming user interface for calendar and mail views
Features that debuted in Outlook 2013, which was released on January 29, 2013, include:
- Attachment reminder
- Exchange ActiveSync(EAS)
- Add-in resiliency
- Cached Exchange mode improvements
- IMAP improvements
- Outlook data file(.ost) compression
- People hub
- Startup performance improvements
Features that debuted in Outlook 2016, include:
- Attachment link to cloud resource
- Groups redesign
- Search cloud
- Clutter Folder
- Email Address Internationalization
Microsoft also released several versions of Outlook for
classic Mac OS, 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 which has several overlapping features including Exchange client capabilities. Somewhat improved Exchange support was added in Entourage 2008 Web Services Edition.
Microsoft Outlook for Mac 2011
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 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.
iOS and Android
Outlook for Phones & Tablets
In January 2015,
Microsoft released Outlook for Phones and Tablets (v1.3 build) with
Office 365 This was the first Outlook for these platforms with email, calendar, and contacts.