Why a campaign sent little or nothing

Returns the actions that did NOT run for this campaign in a recent window, grouped by cause. Each group carries reason (a stable token to branch on), a short label, a full plain-language plain_english sentence safe to show a person verbatim, count, first_seen_at / last_seen_at, resumes_at when the moment is knowable, and is_normal_wait. is_normal_wait: true marks the many causes that are the system working correctly — normal pacing that resumes on its own, not a fault. summary_headline answers the question in one sentence. recent is a capped sample of individual actions, newest first. Read-only: this endpoint cannot change a campaign or raise any limit, and it never returns raw internal error text.

Required scope: campaigns:read.