| Name | Type | Description | Notes |
|---|---|---|---|
| account_id | string | Social account ID | |
| message | string | Message text | [optional] |
| attachment_url | string | URL of the attachment to send (image, video, audio, or file). The URL must be publicly accessible. For binary file uploads, use multipart/form-data instead. | [optional] |
| attachment_type | string | Type of attachment. Defaults to file if not specified. | [optional] |
| attachment_name | string | WhatsApp only. Display name for a document sent via attachmentUrl with attachmentType: file (e.g. "Report.pdf"). Maps to the recipient's file name; without it WhatsApp derives the name from the URL and shows "Untitled". Ignored for image/video/audio and for binary uploads (which use the uploaded file's name). | [optional] |
| voice_note | bool | WhatsApp only. When `true` on an audio attachment, the message is sent as a voice message (PTT) — the recipient sees the waveform + voice-note UI instead of a basic audio attachment. The audio file MUST be `.ogg` encoded with the OPUS codec (mono) per Meta's voice-message contract; other formats are rejected by WhatsApp. Ignored for non-audio attachments. | [optional] |
| quick_replies | \Zernio\Model\SendInboxMessageRequestQuickRepliesInner[] | Quick reply buttons. Mutually exclusive with buttons. Max 13 items. | [optional] |
| buttons | \Zernio\Model\SendInboxMessageRequestButtonsInner[] | Action buttons. Mutually exclusive with quickReplies. Max 3 items. WhatsApp: buttons always render as interactive reply buttons. Only `title` and `payload` are used — `type`, `url`, and `phone` are ignored (WhatsApp has no URL/phone button in this field; use the `interactive` field with `type: cta_url` for a link button). `payload` becomes the button reply ID delivered on the `message.received` webhook when the user taps. To send a simple reply-button message, provide `title` + `payload` and set `type: postback`, e.g. `{ "type": "postback", "title": "Yes", "payload": "yes" }`. | [optional] |
| template | \Zernio\Model\SendInboxMessageRequestTemplate | [optional] | |
| interactive | \Zernio\Model\SendInboxMessageRequestInteractive | [optional] | |
| reply_markup | \Zernio\Model\SendInboxMessageRequestReplyMarkup | [optional] | |
| messaging_type | string | Facebook messaging type. Required when using messageTag. | [optional] |
| message_tag | string | Facebook message tag for messaging outside 24h window. Requires messagingType MESSAGE_TAG. Instagram only supports HUMAN_AGENT. | [optional] |
| reply_to | string | Platform message ID to quote-reply to. For WhatsApp, pass the wamid (available in message.platformMessageId from webhooks). For Telegram, pass the Telegram message ID. | [optional] |
| location | \Zernio\Model\SendInboxMessageRequestLocation | [optional] | |
| contacts | \Zernio\Model\SendInboxMessageRequestContactsInner[] | WhatsApp-only. Send one or more contact cards. | [optional] |