On Resend email suppressed - Automate.ax

resend.onEmailSuppressed handles email.suppressed when recipient or account policy prevents sending.

automations/handle-resend-suppression.automation.ts

import { automation } from "automate.ax"
import { resend } from "automate.ax/resend"

export default automation("Handle Resend suppression", () => {
  const suppressed = resend.onEmailSuppressed()
  suppressed.transform(({ createdAt, emailId, suppressed }) => ({
    createdAt,
    emailId,
    message: suppressed.message,
    suppressionType: suppressed.type,
  }))
})

Optional static account defaults to the project binding.

Trigger data

Returns the shared Resend outbound event fields, plus suppression details:

type ResendEmailSuppressedEvent = ResendOutboundEvent<"email.suppressed"> & {
  suppressed: {
    diagnosticCode?: (string | null)[]
    message: string
    reason?: string
    type: string
  }
}

diagnosticCode can contain null when Resend suppresses an address without an SMTP response. event preserves the original Resend envelope. A suppressed event is distinct from a failed attempt or recipient-server bounce.