Exchange ActiveSync

E183298

data synchronization protocol mobile synchronization protocol

Exchange ActiveSync is a Microsoft-developed protocol that enables synchronization of email, contacts, calendar, and other data between mail servers and mobile or desktop clients.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (6)

Label	Occurrences
Exchange ActiveSync canonical	5
Microsoft Exchange ActiveSync	5
ActiveSync	3
ActiveSync protocol	1
Microsoft Exchange (via client)	1
Nokia Mail for Exchange	1

How this entity was disambiguated

This entity first appeared as the object of triple T1611721 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Exchange ActiveSync
Context triple: [Microsoft Outlook, supportsProtocol, Exchange ActiveSync]

A. Exchange Online
Exchange Online is Microsoft’s cloud-based email and calendaring service that provides hosted Exchange server functionality as part of the Microsoft 365 suite.
B. Outlook
Outlook is an opinion and analysis section of The Washington Post featuring commentary, essays, and in-depth perspectives on current events and issues.
C. Outlook
Outlook is Microsoft’s email and personal information management application that provides integrated email, calendar, contacts, and task functionality for individuals and organizations.
D. IMAP
IMAP (Internet Message Access Protocol) is a standard email protocol that allows clients to access and manage messages stored on a mail server while keeping them synchronized across multiple devices.
E. Lotus Notes
Lotus Notes is a collaborative client-server software platform best known for its email, calendaring, and business application capabilities, widely used in enterprises for groupware and workflow solutions.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Exchange ActiveSync
Target entity description: Exchange ActiveSync is a Microsoft-developed protocol that enables synchronization of email, contacts, calendar, and other data between mail servers and mobile or desktop clients.

A. Exchange Online
Exchange Online is Microsoft’s cloud-based email and calendaring service that provides hosted Exchange server functionality as part of the Microsoft 365 suite.
B. Outlook
Outlook is an opinion and analysis section of The Washington Post featuring commentary, essays, and in-depth perspectives on current events and issues.
C. Outlook
Outlook is Microsoft’s email and personal information management application that provides integrated email, calendar, contacts, and task functionality for individuals and organizations.
D. IMAP
IMAP (Internet Message Access Protocol) is a standard email protocol that allows clients to access and manage messages stored on a mail server while keeping them synchronized across multiple devices.
E. Lotus Notes
Lotus Notes is a collaborative client-server software platform best known for its email, calendaring, and business application capabilities, widely used in enterprises for groupware and workflow solutions.
F. None of above. chosen

Statements (62)

Predicate	Object
instanceOf	data synchronization protocol ⓘ mobile synchronization protocol ⓘ
category	email synchronization technology ⓘ groupware protocol ⓘ
compatibleWith	Android email clients ⓘ BlackBerry 10 devices ⓘ Hotmail (legacy) ⓘ linked to: Outlook Microsoft 365 ⓘ Microsoft Exchange Server ⓘ Office 365 ⓘ linked to: Microsoft 365 Outlook.com ⓘ linked to: Outlook Windows Mobile ⓘ Windows Phone ⓘ iOS Mail ⓘ third-party mobile email clients ⓘ
designedFor	Microsoft Exchange Server ⓘ
developer	Microsoft ⓘ
enables	synchronization over Wi‑Fi ⓘ synchronization over mobile data networks ⓘ
hasSpecification	Exchange ActiveSync protocol documentation on Microsoft Docs ⓘ
introducedBy	Microsoft Exchange Server 2003 SP2 ⓘ linked to: Microsoft Exchange Server
licensingModel	licensed to third-party device manufacturers ⓘ licensed to third-party software vendors ⓘ
networkProtocol	HTTP ⓘ HTTPS ⓘ
primaryUse	synchronization between mail servers and desktop clients ⓘ synchronization between mail servers and mobile clients ⓘ
protocolType	proprietary protocol ⓘ
releasePeriod	mid-2000s ⓘ
securityFeature	SSL/TLS encryption ⓘ policy-based access control ⓘ remote device lock ⓘ remote device wipe ⓘ
shortName	EAS ⓘ
supportsClientType	desktop email clients ⓘ smartphones ⓘ tablets ⓘ web-based email clients ⓘ
supportsFeature	HTML email ⓘ attachment synchronization ⓘ calendar free/busy lookup ⓘ device encryption policies ⓘ device policy enforcement ⓘ direct push technology ⓘ folder hierarchy synchronization ⓘ message search on server ⓘ out-of-office settings synchronization ⓘ password policies ⓘ push email ⓘ remote wipe ⓘ
supportsSynchronizationOf	calendar ⓘ contacts ⓘ email ⓘ mail folders ⓘ meeting requests ⓘ message flags ⓘ notes ⓘ read status ⓘ tasks ⓘ
transportMechanism	XML over HTTP ⓘ
usedFor	BYOD device management ⓘ enterprise mobile email access ⓘ

How these facts were elicited

Referenced by (16)

Full triples — surface form annotated when it differs from this entity's canonical label.

Microsoft Outlook → supportsProtocol → Exchange ActiveSync ⓘ

subject linked to: Outlook

Windows Phone → supports → Exchange ActiveSync ⓘ

Windows Mobile → supportsSynchronizationWith → ActiveSync ⓘ