Microsoft Outlook
email service developed as part of Microsoft 365
Microsoft Outlook is a personal information manager software system from Microsoft, available as a part of the Microsoft 365 software suite. Primarily popular as an email client for businesses, Outlook also includes functions such as calendaring, task managing, contact managing, note-taking, journal logging, web browsing, and RSS news aggregation.
Individuals can use Outlook as a stand-alone application; organizations can deploy it as multi-user software (through Microsoft Exchange Server or SharePoint) for shared functions such as mailboxes, calendars, folders, data aggregation (i.e., SharePoint lists), and as appointment scheduling apps.
Versions
Outlook replaced Microsoft's previous scheduling and email clients, Schedule+ 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 versions of Microsoft Outlook include:
Microsoft Outlook
Microsoft Outlook is an email and personal information manager software primarily used in professional settings. As part of the Microsoft 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 with SharePoint for file sharing. While it stores email data locally for offline access, newer versions restrict link opening to Microsoft's own browsers.
The public source identifies “Microsoft Outlook” as email service developed as part of Microsoft 365. This brief keeps that definition visible, then builds a research path around Microsoft, Outlook and email.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Microsoft Outlook”, the useful work is to connect “email service developed as part of Microsoft 365” to the records capable of establishing context and consequence.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 19, 2026. The linked authority identifier is Q80911. VIAF identifies the subject as 174285471. The Library of Congress control number is n96091386. 2 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2000.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Microsoft Outlook”, its source revision and the description used here.
- Expand the search: follow Microsoft Outlook primary sources, Microsoft Outlook archive and Microsoft research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Microsoft Outlook”?
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Search terms from this dossier
This entry incorporates text from “Microsoft Outlook” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.