curl --request GET \
  --url https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages \
  --header 'Authorization: Bearer <token>'

{
  "count": 123,
  "messages": [
    {
      "inbox_id": "<string>",
      "thread_id": "<string>",
      "message_id": "<string>",
      "labels": [
        "<string>"
      ],
      "timestamp": "2023-11-07T05:31:56Z",
      "from": "<string>",
      "to": [
        "<string>"
      ],
      "size": 123,
      "updated_at": "2023-11-07T05:31:56Z",
      "created_at": "2023-11-07T05:31:56Z",
      "cc": [
        "<string>"
      ],
      "bcc": [
        "<string>"
      ],
      "subject": "<string>",
      "preview": "<string>",
      "attachments": [
        {
          "attachment_id": "<string>",
          "size": 123,
          "filename": "<string>",
          "content_type": "<string>",
          "content_id": "<string>"
        }
      ],
      "in_reply_to": "<string>",
      "references": [
        "<string>"
      ],
      "headers": {}
    }
  ],
  "limit": 123,
  "next_page_token": "<string>"
}