The last time the validation_state was updated, either manually or
automatically. A contact is considered stale if its validation state was
updated more than 1 year ago.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis documentation covers the \u003ccode\u003eContact\u003c/code\u003e class within the Google Cloud Essential Contacts v1 API, which is used for managing contacts that receive notifications from Google Cloud.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eContact\u003c/code\u003e class has properties for \u003ccode\u003eContactName\u003c/code\u003e, \u003ccode\u003eEmail\u003c/code\u003e, \u003ccode\u003eLanguageTag\u003c/code\u003e, \u003ccode\u003eName\u003c/code\u003e, \u003ccode\u003eNotificationCategorySubscriptions\u003c/code\u003e, \u003ccode\u003eValidateTime\u003c/code\u003e, and \u003ccode\u003eValidationState\u003c/code\u003e, allowing you to manage contact details, email addresses, preferred language, notification categories, and validation status.\u003c/p\u003e\n"],["\u003cp\u003eThe API supports various versions, with the latest being 2.5.0, and offers features such as two constructors for creating new contact objects, \u003ccode\u003eContact()\u003c/code\u003e and \u003ccode\u003eContact(Contact other)\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eContact\u003c/code\u003e class inherits from \u003ccode\u003eobject\u003c/code\u003e and implements multiple interfaces such as \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, providing functionalities for message handling, equality comparisons, deep cloning, and buffer management.\u003c/p\u003e\n"]]],[],null,["# Essential Contacts v1 API - Class Contact (2.5.0)\n\nVersion latestkeyboard_arrow_down\n\n- [2.5.0 (latest)](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/latest/Google.Cloud.EssentialContacts.V1.Contact)\n- [2.4.0](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/2.4.0/Google.Cloud.EssentialContacts.V1.Contact)\n- [2.3.0](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/2.3.0/Google.Cloud.EssentialContacts.V1.Contact)\n- [2.2.0](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/2.2.0/Google.Cloud.EssentialContacts.V1.Contact)\n- [2.1.0](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/2.1.0/Google.Cloud.EssentialContacts.V1.Contact)\n- [2.0.0](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/2.0.0/Google.Cloud.EssentialContacts.V1.Contact)\n- [1.1.0](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/1.1.0/Google.Cloud.EssentialContacts.V1.Contact)\n- [1.0.0](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/1.0.0/Google.Cloud.EssentialContacts.V1.Contact) \n\n public sealed class Contact : IMessage\u003cContact\u003e, IEquatable\u003cContact\u003e, IDeepCloneable\u003cContact\u003e, IBufferMessage, IMessage\n\nReference documentation and code samples for the Essential Contacts v1 API class Contact.\n\nA contact that will receive notifications from Google Cloud. \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e Contact \n\nImplements\n----------\n\n[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[Contact](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/latest/Google.Cloud.EssentialContacts.V1.Contact), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[Contact](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/latest/Google.Cloud.EssentialContacts.V1.Contact), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[Contact](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/latest/Google.Cloud.EssentialContacts.V1.Contact), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html) \n\nInherited Members\n-----------------\n\n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Cloud.EssentialContacts.V1](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/latest/Google.Cloud.EssentialContacts.V1)\n\nAssembly\n--------\n\nGoogle.Cloud.EssentialContacts.V1.dll\n\nConstructors\n------------\n\n### Contact()\n\n public Contact()\n\n### Contact(Contact)\n\n public Contact(Contact other)\n\nProperties\n----------\n\n### ContactName\n\n public ContactName ContactName { get; set; }\n\n[ContactName](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/latest/Google.Cloud.EssentialContacts.V1.ContactName)-typed view over the [Name](/dotnet/docs/reference/Google.Cloud.EssentialContacts.V1/latest/Google.Cloud.EssentialContacts.V1.Contact#Google_Cloud_EssentialContacts_V1_Contact_Name) resource name property.\n\n### Email\n\n public string Email { get; set; }\n\nRequired. The email address to send notifications to. The email address\ndoes not need to be a Google Account.\n\n### LanguageTag\n\n public string LanguageTag { get; set; }\n\nRequired. The preferred language for notifications, as a ISO 639-1 language\ncode. See [Supported\nlanguages](https://cloud.google.com/resource-manager/docs/managing-notification-contacts#supported-languages)\nfor a list of supported languages.\n\n### Name\n\n public string Name { get; set; }\n\nOutput only. The identifier for the contact.\nFormat: {resource_type}/{resource_id}/contacts/{contact_id}\n\n### NotificationCategorySubscriptions\n\n public RepeatedField\u003cNotificationCategory\u003e NotificationCategorySubscriptions { get; }\n\nRequired. The categories of notifications that the contact will receive\ncommunications for.\n\n### ValidateTime\n\n public Timestamp ValidateTime { get; set; }\n\nThe last time the validation_state was updated, either manually or\nautomatically. A contact is considered stale if its validation state was\nupdated more than 1 year ago.\n\n### ValidationState\n\n public ValidationState ValidationState { get; set; }\n\nThe validity of the contact. A contact is considered valid if it is the\ncorrect recipient for notifications for a particular resource."]]
