---
schema_version: "1"
id: 5591919eb3b52091a2508a28b0a037fcd3653ea2ac686cd739c38a1556ee9fa7
title: EmailMessageRelation DLO Mappings
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/data-cloud/data-cloud-dmo-mapping/guides/standard_mappings/c360dm-emailmessagerelation_dmo_mappings.md
canonical_url: https://developer.salesforce.com/docs/data/data-cloud-dmo-mapping/guide/c360dm-emailmessagerelation_dmo_mappings.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: 8340a4154c5e10d5a393602aba8100ba99e53e2062eeecba14f6da0330195874
products:
  - Data 360 DMO and Mapping Guide
  - Data 360 Developer Documentation
---
# EmailMessageRelation DLO Mappings

The EmailMessageRelation object is a Salesforce standard object that you can ingest and map to Data Model Objects (DMOs) for use in Data Cloud-powered features and agents.

![Object Mapping Diagram for EmailMessageRelation](https://developer.salesforce.com/media/data-cloud-dmo-mapping/standard_mappings/EmailMessageRelation_obj_mappings_v3.svg '{"class": "image-lg"}')

## Mappings to the ActivityParticipant DMO Object
The EmailMessageRelation DLO is mapped to the [ActivityParticipant DMO](https://developer.salesforce.com/docs/data/data-cloud-dmo-mapping/std_dmos/c360dm-si-activityparticipantdmo-dmo.md).


![Mapping diagram for EmailMessageRelation DLO to ActivityParticipant DMO](https://developer.salesforce.com/media/data-cloud-dmo-mapping/standard_mappings/EmailMessageRelation_to_ActivityParticipantDmo_def_v3.svg '{"class": "image-lg"}')
* The EmailMessageRelation DLO field **RelationId** maps to the ActivityParticipant DMO Object **ParticipantId** field.
* The EmailMessageRelation DLO field **EmailMessageId** maps to the ActivityParticipant DMO Object **ActivityId** field.
* The EmailMessageRelation DLO field **ActivityObject** maps to the ActivityParticipant DMO Object **ActivityObject** field.
* The EmailMessageRelation DLO field **ParticipantObject** maps to the ActivityParticipant DMO Object **ParticipantObject** field.
* The EmailMessageRelation DLO field **DataSource** maps to the ActivityParticipant DMO Object **DataSourceId** field.
* The EmailMessageRelation DLO field **Id** maps to the ActivityParticipant DMO Object **Id** field.
* The EmailMessageRelation DLO field **ActivityParticipantRole** maps to the ActivityParticipant DMO Object **ActivityParticipantRole** field.
* The EmailMessageRelation DLO field **DataSourceObject** maps to the ActivityParticipant DMO Object **DataSourceObjectId** field.