Email - Get Message Send Status for Recipient
GET https://{{et_subdomain}}.rest.marketingcloudapis.com//messaging/v1/email/messages/{{messageKey}}
https://developer.salesforce.com/docs/atlas.en-us.mc-apis.meta/mc-apis/getSendStatusForRecipient.htm
Gets the send status for a message. Because this route is rate-limited, use it for infrequent verification of a messageKey. To collect send status at scale, subscribe to transactional send events using the Event Notification Service.
RESPONSES
status: OK
{"requestId":"730af601-3e42-4838-9ed0-bddf06351f72","eventCategoryType":"TransactionalSendEvents.EmailSent","timestamp":"2019-04-09T22:09:29.103","compositeId":"69787B6F-8828-E911-A261-78E3B50B4F00.1420508.44609.927.163040351","info":{"messageKey":"72c0a686-c99f-4b10-ab9b-ae3ff6b89307","contactKey":"aaron.cates@salesforce.com","to":"aaron.cates@salesforce.com"}}