Force.com Apex Code Developer's Guide

Getting Started
Writing Apex
Ways to Invoke Apex
Finishing Touches
Reference
Apex DML Operations
ApexPages Namespace
Approval Namespace
Auth Namespace
Canvas Namespace
ChatterAnswers Namespace
ConnectApi Namespace
Database Namespace
Datacloud Namespace
DataSource Namespace
Dom Namespace
Flow Namespace
KbManagement Namespace
Messaging Namespace
Process Namespace
QuickAction Namespace
Reports Namespace
Schema Namespace
Search Namespace
Site Namespace
Support Namespace
System Namespace
Address Class
Answers Class
ApexPages Class
Approval Class
Blob Class
Boolean Class
BusinessHours Class
Cases Class
Cases Methods
getCaseIdFromEmailThreadId(emailThreadId)
Comparable Interface
Continuation Class
Cookie Class
Crypto Class
Custom Settings Methods
Database Class
Date Class
Datetime Class
Decimal Class
Double Class
EncodingUtil Class
Enum Methods
Exception Class and Built-In Exceptions
Http Class
HttpCalloutMock Interface
HttpRequest Class
HttpResponse Class
Id Class
Ideas Class
InstallHandler Interface
Integer Class
JSON Class
JSONGenerator Class
JSONParser Class
JSONToken Enum
Limits Class
List Class
Location Class
Long Class
Map Class
Matcher Class
Math Class
Messaging Class
MultiStaticResourceCalloutMock Class
Network Class
PageReference Class
Pattern Class
Queueable Interface
QueueableContext Interface
QuickAction Class
RemoteObjectController
ResetPasswordResult Class
RestContext Class
RestRequest Class
RestResponse Class
Schedulable Interface
SchedulableContext Interface
Schema Class
Search Class
SelectOption Class
Set Class
Site Class
sObject Class
StaticResourceCalloutMock Class
String Class
System Class
Test Class
Time Class
TimeZone Class
Trigger Class
Type Class
UninstallHandler Interface
URL Class
UserInfo Class
Version Class
WebServiceCallout Class
WebServiceMock Interface
XmlStreamReader Class
XmlStreamWriter Class
TerritoryMgmt Namespace
UserProvisioning Namespace
Appendices
Glossary
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getCaseIdFromEmailThreadId(emailThreadId)

Returns the case ID corresponding to the specified email thread ID.

Signature

public static ID getCaseIdFromEmailThreadId(String emailThreadId)

Parameters

emailThreadId
Type: String

Return Value

Type: ID

Usage

The emailThreadId argument should have the following format: _00Dxx1gEW._500xxYktg. Other formats, such as ref:_00Dxx1gEW._500xxYktl:ref and [ref:_00Dxx1gEW._500xxYktl:ref], are invalid.