# description
Per-recipient outcomes, in the same order as the request's recipients[]. The call returns 200 whenever the batch itself was accepted — check each result's status: a batch can partially succeed (e.g. one address suppressed, the rest sent). Every non-failed result carries its own message id.

# properties.results.description
One entry per recipients[] entry, same order.

# properties.results.items.properties.to.description
The recipient this result is for (echoed from the request).

# properties.results.items.properties.id.description
The message id (msg_…), or the scheduled-send id (ssnd_…) when parked for later. Absent on failure.

# properties.results.items.properties.error.description
Human-readable reason, present only when status is failed.

# properties.results.items.properties.code.description
Machine-readable reason (e.g. recipient_suppressed, daily_limit), present only when status is failed.