Messaging API
    • Root
      • OTT
        • Send OTT
      • SMS
        • Send SMS
          • SendSms
          • SendSmsBatch
      • Voice
        • Calls
          • Place a call, or launch a campaign
      • Email
        • Raíz
        • Service
          • Health check
        • Delivery
          • Queue transactional email(s) for delivery
        • Attachments
          • DEPRECATED — you do not need this to send attachments
        • Templates
          • List EmailTemplates owned by the calling client
    • Raíz
    • Schemas
      • Schemas
        • MessageChannel
        • ApiSmsRequest
        • VoiceApiRequest
        • EmailRecipient
        • OTTMessagePayload
        • EmailRequest
        • OTTMessageRequest
        • EmailResponse
        • EmailResult
      • EmailDeliverAttachment
      • VoiceDeliverRequest
      • SmsBatchRequest
      • EmailDeliverPayload
      • ErrorMessage
      • BatchError
      • EmailDeliverRequest
      • ProblemDetails
      • EmailDeliverResult
      • CampaignAccepted
      • EmailDeliverResponse
      • AttachmentUploadResponse
      • EmailTemplateSummary

    AttachmentUploadResponse

    {
    "attachmentId": "7f3a9c21e4b04d6f9a1c8e5b2d70f431",
    "originalName": "invoice-2026-04.pdf",
    "sizeBytes": 248193,
    "expiresUtc": "2026-08-22T03:14:07Z"
}
    Built with