Carrier rejection codes behind a funnel drop-off
Drill down on one funnel step to see the top carrier rejection codes for messages that dropped there, each decorated with a human-readable name, description, and actionable guidance from the carrier error dictionary. Path step: sent (sent but never delivered) carries the reasons; delivered / read / queued are reserved and currently return an empty list. Query params: date range (start_date / end_date, else days), channel, and limit (1-20, default 5). Use it to answer ‘why did this funnel bar drop?’ inline. Read-only.
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.