Provides the unique identifier assigned by the Exchange store to a contact item. This value is required to retrieve or reference the contact and is immutable and read-only.

Contains the raw content of the contact item in Multipurpose Internet Mail Extensions (MIME) format, encoded as Base64. This field is used for interoperability with external systems that handle MIME-based message representations.

Specifies a unique version identifier for the contact item. This key updates whenever the item is modified and helps to manage concurrency and track changes. It is read-only.

Identifies the folder in which the contact is stored. This ID is unique within the Exchange store and is used to trace the contact's hierarchy. It is read-only and primarily used for organizational queries.

Stores the unique change key for the folder containing the contact. This value updates when the folder is modified and is used to detect structural or content changes within the folder. It is read-only.

Indicates the type of the item based on Exchange classification. For contact items, this is typically set to 'IPM.Contact', but can vary if custom message classes are used.

Provides a short text summary or label for the contact item, often used as the display name or quick reference. The subject can contain up to 255 characters and is commonly visible in UI listings.

Represents the sensitivity classification of the contact, such as Normal, Personal, Private, or Confidential. This field helps users and systems determine how the contact data should be handled.

Contains the main text content associated with the contact, such as notes or background information. This can include user-entered freeform text and is often used to provide context or descriptions.

Captures the timestamp of when the contact item was received or created in the mailbox. This datetime value is useful for sorting or filtering contacts based on recency.

Indicates the total size of the contact item in bytes, including metadata and body content. This value is useful for storage management and is automatically calculated by Exchange. It is read-only.

Holds a semicolon-separated list of category labels applied to the contact. These categories help organize and group contact items for easier retrieval or color-coding in the user interface.

Defines the priority level assigned to the contact. Typical values include Low, Normal, and High, allowing clients to rank or highlight contacts based on their relative significance.

Specifies whether the contact item has been successfully submitted to the Outbox default folder, indicating it is in the process of being sent or has been queued for sending.

Stores the identifier of the original item to which the current item is a response, enabling threaded conversation tracking in messaging systems.

Indicates whether the contact item is currently saved as a draft, meaning it is incomplete or has not yet been finalized or sent.

Determines whether the item was sent by the user to themselves, which can occur in scenarios such as self-reminders or test messages.

Indicates whether this item is a re-sent version of a previously sent message, typically used in retry or correction workflows.

Identifies whether the item has remained unchanged since it was created or last saved, useful for detecting edited or updated records.

Contains the full set of Internet message headers associated with an item in a mailbox, including metadata such as Received, Subject, From, To, Date, Message-ID, MIME-Version, Content-Type, and other transmission-related fields.

Records the exact date and time the contact-related item was sent from the user's mailbox, useful for chronological sorting and delivery auditing.

Captures the timestamp when the contact item was originally created in the mailbox, regardless of whether it was later modified or sent.

Specifies the date and time by which a reminder associated with the contact item is due, helping trigger alerts or notifications for follow-up actions.

Specifies whether a reminder notification is enabled for this Exchange item. A value of true means the user will receive a reminder prior to the start time of the associated event or task.

Defines how many minutes before the scheduled start time a reminder should appear. Commonly used for appointments, tasks, or meeting requests.

Contains the display-friendly, comma-separated list of recipients in the Cc (Carbon Copy) field. This string aggregates recipient display names for rendering in user interfaces.

Contains the display-friendly, comma-separated list of recipients in the To field. This string aggregates recipient display names as shown in email clients or message previews.

Indicates whether the item includes one or more visible file attachments. This flag is set to true if attachments are present and accessible by users.

Specifies the locale or cultural setting applied to the item, such as 'en-US' or 'fr-FR'. This can affect date formats, regional settings, and language display.

Indicates whether the user or client application has permission to create associated contents for the item, typically used for hidden or metadata-bound items within a folder.

Indicates whether the user or client application has permission to add new content items (such as messages or events) to the folder.

Indicates whether the user or client application is allowed to create subfolders within the current folder, forming part of the folder hierarchy.

Indicates whether the user or client application has permission to delete the folder or individual item.

Indicates whether the user or client application can update or change the contents of the folder or item, including properties or data values.

Indicates whether the user or client application is permitted to view the contents of the folder or item, including metadata and body content.

Indicates whether the user or client has visibility into private items—typically calendar events or tasks marked as private by another user.

Specifies the display name of the user who most recently modified the contact item. This helps track changes and determine ownership of updates.

Captures the timestamp of the most recent modification to the contact item. This field is maintained automatically and is read-only.

Indicates whether the contact item is associated with a specific folder, such as a system or hidden folder used for metadata or conversation tracking.

Provides a URL query string that, when appended to the Outlook Web App endpoint, allows users to view the contact item directly in the browser.

Provides a URL query string that enables users to open the contact item in edit mode using the Outlook Web App interface.

Stores the identifier that links the contact item to a broader conversation thread in the Exchange environment. Useful for conversation grouping and tracking.

Contains the unique portion of the message body that is specific to the current contact item, excluding any redundant or quoted content. This can be formatted as HTML or plain text.

Indicates the format used to store the unique body content, such as HTML or TEXT, to assist in rendering or parsing the message body appropriately.

Defines how the contact or distribution list should be sorted and displayed within the Contacts folder. Common formats include Last Name, First Name or Company Name.

Determines the logic used to construct the 'File As' value for the contact, typically based on selected fields like first name, last name, or company.

Represents the display name shown for the contact, distribution list, rule, delegate user, or location. This value is typically user-friendly and used in UI listings.

Stores the first name or given name of the contact, which can be used in sorting, searching, or composing personalized messages.

Stores the abbreviated initials of the contact's full name, commonly derived from the first letter of each part of the name (for example, J.D. for John Doe).

Contains the middle name or initial of the contact, used for full name representation and identity disambiguation.

Holds the informal or familiar name by which the contact is commonly known, distinct from their legal first name.

Specifies the contact's formal title or honorific (such as Mr., Mrs., Dr., or Prof.), often used for professional or formal correspondence.

Represents the given name or first name of the contact, used in full name formatting and indexing.

Contains the contact's middle name component, supporting full name rendering and cultural name structures.

Stores the contact's family name or surname, which is often used for sorting and official identification.

Indicates any generational or academic suffix associated with the contact's name, such as Jr., Sr., III, or Ph.D.

Captures the initials derived from the complete name of the contact, typically used for concise display or indexing.

Stores the contact's full name as a single string, constructed from title, first, middle, last name, and suffix, depending on availability.

Represents the nickname associated with the contact's full name, used for personalization in informal communications.

Contains the Yomi phonetic representation of the contact's first name, used for proper pronunciation and sorting in Japanese systems.

Contains the Yomi phonetic representation of the contact's last name, used for proper pronunciation and sorting in Japanese systems.

Stores the name of the company or organization with which the contact is affiliated, useful for business context and categorization.

Stores the primary email address associated with the contact. This address is typically used as the main point of electronic communication.

Stores an alternative email address for the contact. This is useful when the contact has more than one email account for different purposes such as personal or secondary work use.

Stores a third email address for the contact, allowing users to track multiple active addresses, such as temporary, external, or archived accounts.

Contains the street component of the business address where the contact works. This can include building number, street name, and suite or office details.

Indicates the city portion of the contact's business address, often used for filtering or grouping contacts by location in organizational directories.

Captures the state or province associated with the business address of the contact. This can be useful in regional reporting or compliance processes.

Specifies the country or region in which the contact's business address is located. Used in cross-border communications and location-based filtering.

Stores the postal or ZIP code for the contact's business address. This field supports geographic sorting and mailing list generation.

Holds the street information for the contact's residential address. May include house number, street name, and apartment or unit number.

Indicates the city associated with the contact's home address, often used in demographic profiling or personal contact organization.

Specifies the state or province of the contact's residential location. This can assist in regional segmentation or mail delivery validation.

Stores the country or region of the contact's home address, providing context for time zone, language, and cultural preferences.

Captures the postal or ZIP code related to the home address of the contact. This can aid in delivery services or local search filtering.

Contains the street address for an additional contact location, such as a vacation home, alternate office, or temporary residence.

Specifies the city name associated with the secondary (Other) address of the contact. This is typically used when a contact has more than one address.

Indicates the state, province, or administrative region corresponding to the Other address of the contact.

Captures the name of the country or region for the Other address associated with the contact. This is used when the contact maintains an alternate or secondary location.

Holds the postal or ZIP code corresponding to the Other address of the contact, which can be used for location-based filtering or mail delivery purposes.

Stores the phone number of the contact's assistant. This field is often used in organizational contexts to reach someone who manages the contact's schedule or communications.

Contains the fax number for the contact's primary place of business. This field supports legacy communication methods still used in some industries.

Lists the primary business phone number for the contact, typically used during standard work hours or for professional communication.

Provides a secondary business phone number for the contact, allowing for alternate professional contact options if the primary line is unavailable.

Designates a specific phone number the contact has requested to be called back on. This can differ from their primary or business numbers.

Stores the contact's car phone number, used in contexts where in-vehicle communication is supported and relevant.

Captures the main switchboard or general phone number of the company with which the contact is affiliated. Often used when individual extensions are not known.

Specifies the fax number associated with the contact's home address. This value is typically used for sending documents to a personal fax line.

Indicates the primary landline telephone number at the contact's home residence. Commonly used for personal or non-business-related communication.

Captures an additional home phone number for the contact, allowing for multiple residential contact options.

Contains the Integrated Services Digital Network (ISDN) number for the contact, used in environments where digital telecommunication is supported.

Stores the contact's primary mobile or cell phone number, generally used for direct and immediate personal communication.

Provides an alternative fax number not associated with the home address, potentially linked to another residence or secondary location.

Holds a secondary phone number for the contact that does not fall under home, business, or mobile categories. Useful for less common communication channels.

Stores the contact's pager number, which can be used in legacy systems or industries that still rely on pager communication.

Defines the contact's main telephone number for general communication, regardless of whether it is mobile, home, or business.

Captures the contact's radio telephone number, typically used in industries like maritime, aviation, or emergency services that rely on radio communication devices.

Specifies the telex number for the contact, supporting international text-based communication in legacy messaging networks.

Contains the telephone number used with TTY (Text Telephone) or TDD (Telecommunication Device for the Deaf) devices to facilitate communication for individuals with hearing or speech impairments.

Specifies the full name of the contact's personal assistant, if applicable. This can be used for coordination or communication purposes.

Indicates the contact's date of birth. This field supports date-based reminders and personalization features in calendar or CRM systems.

Provides the URL of the contact's professional or business-related home page. This could be a company website or a professional profile.

Stores the name of the first child associated with the contact. Used to personalize interactions or for recordkeeping in directory-based systems.

Stores the name of the second child associated with the contact. This field is optional and complements Children_1 and Children_3.

Stores the name of the third child associated with the contact. Intended for contacts with multiple dependents to support family-related tracking.

Contains the name of the first company the contact is affiliated with. Useful for professional context and organizational relationships.

Contains the name of the second company associated with the contact. Helps capture multiple business affiliations if they exist.

Contains the name of the third company linked to the contact. Supports scenarios where the contact is involved in several organizations.

Specifies the origin of the contact data, such as whether it is sourced from the Exchange mailbox store or from Active Directory Domain Services.

Captures the internal department or organizational unit the contact is part of. Commonly used to group or filter contacts in enterprise directories.

Includes generational suffixes such as Jr., Sr., II, III that appear after the contact's full name to distinguish between family members.

Stores the primary instant messaging address used by the contact for real-time communications through chat platforms.

Stores an additional instant messaging address for the contact. Useful if the contact uses multiple messaging platforms.

Stores a third instant messaging address for the contact, supporting multiple IM channels for redundancy or alternative communications.

Stores the professional title or designation of the contact within their organization, such as 'Project Manager' or 'Senior Analyst'.

Indicates the name or identifier of the contact's manager or direct supervisor within an organizational hierarchy.

Captures mileage information associated with the contact, typically used for tracking travel distance or expenses related to meetings or visits.

Provides the specific location or address of the contact's office, which can include a room number, building name, or geographic location.

Defines the preferred postal address type for the contact, such as Home, Business, or Other, to determine how mailing-related functions prioritize addresses.

Describes the field of expertise or occupation of the contact, such as 'Engineer', 'Attorney', or 'Educator'.

Contains the name of the contact's spouse or partner, useful for personalizing communication and maintaining relationship context.

Stores the last name or family name of the contact, used in formal correspondence and identification.

Records the wedding anniversary date of the contact, which can be used to personalize messages or reminders.

Indicates whether the contact entry includes an associated image or profile picture file attachment.

Contains the full name of the contact—first and last—spelled using phonetic characters or conventions for pronunciation support.

Represents the phonetic spelling of the contact's first name to assist with proper pronunciation, especially in multilingual environments.

Represents the phonetic spelling of the contact's last name to assist with pronunciation, often used in speech recognition and automated systems.

Contains the contact's email alias, typically a simplified or alternative email identifier used in place of the full address.

Stores additional, free-form information about the contact, such as meeting notes, personal preferences, or context not captured in structured fields.

Contains encoded image data or a file reference that visually represents the contact, commonly displayed in address books or messaging applications.

Contains a Base64-encoded representation of the contact's S/MIME (Secure/Multipurpose Internet Mail Extensions) certificate, used for encrypting and signing email communications.

Holds a serialized value representing the contact's Microsoft Exchange-specific certificate, typically used for secure messaging and client authentication within an Exchange environment.

Stores the unique identifier assigned to the contact in the directory service (such as Active Directory), which enables lookups and integration with enterprise identity systems.

Contains the SMTP email address associated with the mailbox of the contact's manager. This is used in organizational hierarchies to identify supervisory relationships.

Holds a comma-separated list of SMTP email addresses for the contact's direct reports, enabling navigation and mapping of reporting structures within a directory or address book.

Specifies the identifier of the user account to impersonate when performing operations under delegated access. This is commonly used in service scenarios to act on behalf of another user.

Indicates the type of identifier used to locate the impersonation target. Accepted values include PrincipalName, SID, PrimarySmtpAddress, and SmtpAddress.

The SMTP address of a shared mailbox whose contact list should be accessed. This allows retrieval of contact records stored in shared or team mailboxes.