EVENTcampaign.send_rejected

Campaign message send rejected

Event name: campaign.send_rejected

A message could not be sent (insufficient credits, invalid contact, or provider rejection). Scope: location-scoped. Delivered as a signed HTTP POST to your Webhooks URL.

Every delivery is signed. Verify X-Synup-Signature before processing — see Synup Webhooks.

Payload

Name	Type	Required	Description
`event`	string	optional	Dotted event name.
`timestamp`	string	optional	ISO-8601 UTC time the event was emitted.
`account_id`	integer	optional	Synup account the event belongs to.
`location_id`	string	optional	Numeric string for location-scoped events; null for brand-scoped events.
`data`	object	optional
`data.campaign_id`	string	optional	Campaign UUID.
`data.customer_id`	string	optional	Intended recipient UUID.
`data.message_id`	string	optional	Rejected message UUID.
`data.channel`	string	optional	"sms" or "email".
`data.message_type`	string	optional	Message subtype (e.g. "SmsMessage", "OpeningEmailMessage").
`data.reason`	string	optional	Rejection reason (omitted if none).

Example delivery

{
  "event": "campaign.send_rejected",
  "timestamp": "2026-07-15T09:02:10Z",
  "account_id": 11073,
  "location_id": "279381",
  "data": {
    "campaign_id": "8f3a1c72-..",
    "customer_id": "a9..",
    "message_id": "e4..",
    "channel": "sms",
    "message_type": "SmsMessage",
    "reason": "Insufficient SMS credits"
  }
}