Microsoft Outlook

This article is about the desktop subscription software. For web platform, seeOutlook on the web.For the email service, seeOutlook.

Microsoft Outlookis apersonal information managersoftware system fromMicrosoft,available as a part of theMicrosoft 365software suites. Primarily popular as anemail clientfor businesses, Outlook also includes functions such ascalendaring,task managing,contact managing,note-taking,journal logging,web browsing,andRSSnews aggregation.

Microsoft Outlook

An email inbox in Outlook (New UI, 365 and Office LTSC 2021), running onWindows 10
Developer(s)	Microsoft Corporation
Initial release	January 16, 1997(1997-01-16)
Stable release(s)
Microsoft 365& Retail(Windows) 2501 (Build 18429.20158) / 11 February 2025(2025-02-11) Microsoft 365(Mac) 16.94 (Build 25020927) / 11 February 2025(2025-02-11) Office 2021 (LTSC) 2108 (Build 14332.20857) / 11 February 2025(2025-02-11) Office 2019 (LTSC) 1808 (Build 10416.20058) / 11 February 2025(2025-02-11) Outlook app Windows 1.2025.122.200 / 31 January 2025(2025-01-31) Android 4.2504.2 / 11 February 2025(2025-02-11) Wear OS 4.2504.2 / 11 February 2025(2025-02-11) iOS 4.2504.0 / 4 February 2025(2025-02-04) Android (Lite) 3.59.0 / 12 January 2025(2025-01-12)
Operating system	Windows,macOS
Type	Personal information manager
License	Trialware
Website	www.microsoft/microsoft-365/outlook/

Individuals can use Outlook as astand-alone application;organizations can deploy it asmulti-user software(throughMicrosoft Exchange ServerorSharePoint) for shared functions such asmailboxes,calendars,folders,data aggregation(i.e., SharePoint lists), and asappointment schedulingapps.

Other than the paid software onWindowsandMacdesktops that this article talks about, the Outlook name also covers several other current software:

• Outlook on the web,formerlyOutlook Web App,a web version of Microsoft Outlook, included in Microsoft 365,Exchange Server,andExchange Online(domain outlook.office365 )
• Outlook for Windows,a new, free Outlook application that is preloaded with Windows 11 from 2024
• Outlook Mobile,a mobile app version of Outlook
• Outlook,formerlyHotmail,a free personal email service offered by Microsoft alongside a webmail client(domain outlook.live )

Versions

Outlook has replaced Microsoft's previousschedulingandemail clients,Schedule+andExchange Client.

Outlook 98andOutlook 2000offer two configurations:

• Internet Mail Only(akaIMOmode): A lighter application mode with specific emphasis onPOP3andIMAPaccounts, including a lightweightFax application.
• Corporate Work group(akaCWmode): A fullMAPIclient with specific emphasis on Microsoft Exchange accounts.

Perpetualversions of Microsoft Outlook include:

Name	Version number	Release date	Notes
Outlook 97	8.0	January 16, 1997	Included inOffice 97and bundled withExchange Server5.0 and 5.5. This was a renamed and slightly upgraded version of the Microsoft Exchange client.
Outlook 98	8.5	June 21, 1998	Freely distributed with books and magazines for coping with the newest Internet standard such asHTML email.Outlook 98 setup was based onActive Setupwhich also installedInternet Explorer 4.
Outlook 2000	9.0	June 27, 1999	Included inOffice 2000and bundled with Exchange 2000 Server.
Outlook 2002	10	May 31, 2001	Included inOffice XP
Outlook 2003	11	November 20, 2003	Included inOffice 2003(incl. Standard Edition for Students and Teachers) and bundled with Exchange Server 2003
Outlook 2007	12	January 27, 2007	Included inOffice 2007,except Office Home and Student edition
Outlook 2010	14	July 15, 2010	Included inOffice 2010Home and Business, Standard, Professional and Professional Plus
Outlook 2011 for Mac	14	October 26, 2010	Included inOffice for Mac 2011Home and Business
Outlook 2013	15	January 29, 2013	Included inOffice 2013,except Home & Student edition
Outlook for Mac	15.3	October 31, 2014	Included inOffice 365,except somecommercial editions
Outlook 2016	16	September 22, 2015	Included inOffice 2016and Office 365
Outlook 2016 for Mac	15.12	September 25, 2015	Included in Office 2016 and Office 365
Outlook 2019	16	September 24, 2018	Included inOffice 2019and Office 365
Outlook 2019 for Mac	16.17	September 24, 2018	Included in Office 2019 and Office 365
Outlook for Phones & Tablets	1.3	2015	Included in Office 365, except somecommercial editions IncludesiOSandAndroidsupport

Microsoft Outlook

Microsoft Outlook is an email and personal information manager software primarily used in professional settings. As part of theMicrosoft Office suite,it offers email management, contact storage, calendar scheduling, and task tracking. Outlook can function independently or as part of a larger Microsoft ecosystem, including integration withSharePointfor file sharing. While it stores email data locally for offline access, newer versions restrict link opening to Microsoft's own browsers.

Privacy is severely degraded in latest versions, as new Outlook sends passwords, mails and other data to Microsoft.

Outlook 2002

Outlook 2002 introduced these new features:

• Autocompleteforemail addresses
• Colored categories for calendar items
• Group schedules
• Hyperlinksupport in email subject lines
• Native support forOutlook(formerly Hotmail)
• Improved search functionality, including the ability to stop a search and resume it later
• Lunar calendarsupport
• MSN Messengerintegration
• 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 policiesfor 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 signedemail orunencryptedemail asplain text;
  • SP2 allows users to—through theRegistry—prevent the addition of new email accounts or the creation of newPersonal Storage Tables;
  • SP3 updates the object model guard security for applications that access messages and other items.
• Smart tagswhenWordis 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:

• Autocompletesuggestions for a single character
• CachedExchange mode
• Colored (quick) flags
• Desktop Alert
• Email filteringto combatspam
  • Images inHTML mailare blocked by default to prevent spammers from determining whether an email address is active viaweb beacon;
  • SP1 introduced the ability to block email based oncountry code top-level domains;
  • SP2 introducedanti-phishingfunctionality that automatically disables hyperlinks present in spam
• Expandabledistribution lists
• Information rights management
• Intrinsic support fortablet PCfunctionality (e.g.,handwriting recognition)
• Reading pane
• Search folders
• Unicodesupport

Outlook 2007

The main Outlook 2007 interface with itsmenusandtoolbars

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
  • Supportedfile typesincludeExcel,PowerPoint,Visio,andWordfiles. If Outlook 2007 is installed onWindows Vista,then audio and video files can be previewed. If a compatiblePDF readersuch asAdobe Acrobat8.1is installed,PDFfiles 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 anHTMLfile—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.,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
  • Postmarkintends to reducespamby making it difficult and time-consuming to send it
• Information rights management improvements withWindows Rights Management Servicesand managed policy compliance integration with Exchange Server 2007
• JapaneseYominame 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 andSMStext messagesto be sent directly tomobile phones
• Instant searchthroughWindows Search,anindex-baseddesktop searchplatform
  • Instant search functionality is also available in Outlook 2002 and Outlook 2003 if these versions are installed alongside Windows Search
• IntegratedRSSaggregation
• Support forWindows SideShowwith the introduction of a calendargadget
• To-DoBar that consolidates calendar information, flagged email, and tasks fromOneNote2007, Outlook 2007,Project2007, andWindows SharePoint Services3.0websiteswithin a central location.
• The ability to export items as PDF orXPSfiles
• Unified messagingsupport with Exchange Server 2007, including features such asmissed-callnotifications, andvoicemailwith voicemail preview andWindows Media Player
• Word 2007 replacesInternet Exploreras the default viewer forHTML email,and becomes the default email editor in this and all subsequent versions.

Outlook 2010

Outlook 2010 in a retail box

Features that debuted in Outlook 2010 include:

• Additionalcommand-lineswitches
• An improved conversation view that groups messages based on different criteria regardless of originating folders
• IMAPmessages 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
• Ribboninterface 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 varioussocial networksand 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
• Voicemailtranscripts forUnified Messagingcommunications
• Zooming user interfacefor calendar and mail views

Outlook 2013

Features that debuted in Outlook 2013, which was released on January 29, 2013, include:

• Attachmentreminder
• Exchange ActiveSync(EAS)
• Add-in resiliency
• CachedExchange mode improvements
• IMAPimprovements
• Outlookdata file(.ost)compression
• People hub
• Startup performance improvements

Outlook 2016

Features that debuted in Outlook 2016, include:

• Attachmentlink tocloud resource
• Groups redesign
• Search cloud
• Clutter folder
• Email Address Internationalization
• Scalable Vector Graphics

Outlook 2019

Features that debuted in Outlook 2019, include:

• Focused Inbox
• Add multipletime zones
• Listen to your emails
• Easier email sorting
• Automatic download ofcloud attachments
• True Dark Mode (version 1907 onward)

Macintosh

Outlook for Mac with the new UI applied

Microsoft made several versions of Outlook for older Mac computers, but only for email accounts on specific company servers (Exchange). It wasn't part of the regular Microsoft Office package for Mac.

Microsoft Entouragewas Microsoft's email app for Mac. It was similar to Outlook but didn't work well with Exchange email at first. Over time, it got better at handling Exchange, but it was always a different program than Outlook.

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 forMacOS.

Outlook 2011 initially supported Mac OS X'sSync Servicesonly for contacts, not events, tasks or notes. It also does not have a Project Manager equivalent to that in Entourage.WithService Pack1 (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,Microsoftreleased Outlook for Mac (v15.3 build 141024) withOffice 365(asoftware as a servicelicensing 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.

The"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 macOSSpotlight.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 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.

In March 2023, Microsoft announced that Outlook for Mac will be available for free. This means that users no longer need a Microsoft 365 subscription or an Office licence to use the program.

Phones and tablets

First released in April 2014 by theventure capital-backedstartupAcompli,the company was acquired byMicrosoftin December 2014. On January 29, 2015, Acompli was re-branded as Outlook Mobile—sharing its name with the Microsoft Outlook desktoppersonal information managerandOutlookemail service.In January 2015,Microsoftreleased Outlook for phones and for tablets (v1.3 build) withOffice 365.This was the first Outlook for these platforms with email, calendar, and contacts.

On February 4, 2015, Microsoft acquiredSunrise Calendar;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 oncloud storageplatforms; 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, includingOutlook,Microsoft ExchangeandGoogle Workspace(formerly G Suite) among others.

Outlook mobile is designed to consolidate functionality that would normally be found in separate apps on mobile devices, similar topersonal information managersonpersonal computers.It 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 asDropbox,Google Drive,andOneDrive.To facilitate inde xing 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, includingExchange,iCloud,Gmail,Google Workspace(formerly G Suite),Outlook,andYahoo! 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 onMicrosoft Azureservers located in the United States.On Exchange accounts, these servers identify as a singleExchange ActiveSyncuser in order to fetch e-mail. Additionally, the app does not supportmobile device management,nor allows administrators to control how third-partycloud storage servicesare used with the app to interact with their users. Concerns surrounding these security issues have prompted some firms, including theEuropean Parliament,to block the app on their Exchange servers.Microsoft maintains a separate, pre-existingOutlook Web Accessapp for Android and iOS.

Outlook Groups

Outlook Groups was a mobile application forWindows Phone,Windows 10 Mobile,AndroidandiOSthat 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 forAndroidandiOSon September 23, 2015.

Outlook Groups was updated on September 30, 2015, that introduced a deep linking feature as well as fi xing 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 fromInternet Explorerrendering engine toMicrosoft Word 2007's. This meant thatHTMLandCascading Style Sheets(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. NeitherCSS1 (1996)norCSS2 (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 theHTML 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

Main article: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 proprietaryMicrosoft Mailsystem, theRich Text FormatfromMicrosoft Wordand the complexOLEgeneral data model.When these programs interface with other protocols such as the various Internet andX.400protocols, 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.

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 calledTransport Neutral Encapsulation Format(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 asiCalendar,CalDAV,SyncML,andvCard3.0. 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.msgformatto save individual emails, instead of the standard.emlformat. Messages use.msgby 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.emlformat 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, likeMozilla 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 anytext editorand searched or indexed like any document by any other software.

Security concerns

As part of itsTrustworthy Computinginitiative, 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-phishingfilter.

Outlook add-ins

Outlookadd-insare 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 assynchronizationorbackup utilities.Outlook add-ins may be developed inMicrosoft Visual Studioor third-party tools such as Add-in Express. Outlook add-ins are not supported inOutlook Web App.

From Outlook 97 on, Exchange Client Extensions are supported in Outlook. Outlook 2000 and later support specificCOMcomponents called Outlook Add-Ins. The exact supported features (such as.NETcomponents) for later generations were extended with each release.

SalesforceIQ Inbox for Outlook

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

Hotmail Connector

Hotmail Connector setup screen

Microsoft Outlook Hotmail Connector(formerlyMicrosoft Office Outlook Connector), is a discontinued and defunct free add-in for Microsoft Outlook 2003, 2007 and 2010, intended to integrateOutlook(formerly Hotmail) into Microsoft Outlook. It usesDeltaSync,a proprietary Microsoft communications protocol that was formerly used by Hotmail.

In version 12, access to tasks and notes and online synchronization withMSN Calendaris only available to MSN subscribers of paid premium accounts. Version 12.1, released in December 2008 as an optional upgrade, usesWindows Live Calendarinstead of the formerMSN 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 fromMSN CalendartoWindows Live Calendar.

Microsoft Outlook 2013 and its newer versions have intrinsic support for accessing Outlook and its calendar over theExchange ActiveSync(EAS) protocol,while older versions of Microsoft Outlook can read and synchronize Outlook emails over theIMAPprotocol.

Social Connector

Outlook Social Connectorwas a free add-in for Microsoft Outlook 2003 and 2007 by Microsoft that allowed integration of social networks such asFacebook,LinkedInandWindows Live Messengerinto 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 supportCalDAVandCardDAVprotocol along the way, various third-party software vendors developed Outlook add-ins to enable users synchronizing withCalDAVandCardDAVservers.CalConnecthas a listof 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 fromOutlook ExpressandLotus Notes.In addition, Microsoft Outlook supportsPOP3andIMAPprotocols, enabling users to import emails from servers that support these protocols. Microsoft Hotmail Connector add-in (described above) helps importing emails fromHotmailaccounts. Outlook 2013 later integrated the functionality of this add-in and added the ability to import email (as well as a calendar) throughExchange ActiveSyncprotocol.

There are some ways to get the emails fromThunderbird;the first is to use a toolthat 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 some 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.

New Outlook for Windows

Main article:Outlook for Windows

In May 2022, Microsoft announced a preview release of new Outlook for Windows, available initially to Office Insiders. The new version of Outlook is aprogressive web appbased on Outlook and offers several new features.

The new Outlook for Windows preview later became available to all existing Outlook for Windows users and also users of the freeMail and Calendar app,which was retired in favor of the new app on December 31, 2024.

The new Outlook has been criticized for having worse performance compared to the previous native versions as well as lack of offline support and missing a unified inbox.Privacy concerns have also been raised around the decision to synchronise non-Microsoft email accounts with the Microsoft cloud, rather than downloading emails to the local device as previous versions have done.

See also

• Address book
• Calendar (Apple)—iCal
• Comparison of email clients
• Comparison of feed aggregators
• Comparison of office suites
• GNOME Evolution
• Kontact
• List of personal information managers
• Personal Storage Table(.pst file)
• Windows Contacts

References

External links

• Official website
• Outlook Developer Center