get https://api.kustomerapp.com/v1/messages/externalid=:externalId
Retrieves a single message using its unique external message ID.
Any one of the following roles is required for this endpoint:
| Legacy Role | Equivalent Permission Set Role |
|---|---|
| org.user.message.read | org.permission.message.read |
| Key | Value | Description |
|---|---|---|
| externalID | string | Unique external ID of the message. |