Get a dead-lettered delivery's full detail
Full drill-down for one dead-lettered delivery: the untruncated last_response_body, the redacted event payload, request/response headers, latency, and the derived reason_code + failure_category the list row carried. Scope is the delivery id alone (no endpoint id) so the row stays inspectable after its endpoint is deleted — endpoint_url degrades to null in that case. Ids that are not currently dead-lettered (not failed, or retries not exhausted) return 404.
Authorizations
Dashboard JWT token from Clerk
Headers
Sandbox opt-in for Clerk-session-authenticated requests. Set to true to route the call through the test-mode pipeline: no real provider delivery, no credits deducted, response meta.test_mode: true. Ignored for live API keys (dv_live_sk_*) — server-to-server clients must use a test-prefixed key (dv_test_sk_*) to exercise sandbox. Test-prefixed keys unconditionally enable sandbox regardless of this header.
true, false Path Parameters
Response
Successful response.