curl --request GET \
  --url https://api.ahasend.com/v2/accounts/{account_id}/messages/{message_id} \
  --header 'Authorization: Bearer <token>'

{
  "object": "message",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "sent_at": "2023-11-07T05:31:56Z",
  "delivered_at": "2023-11-07T05:31:56Z",
  "retain_until": "2023-11-07T05:31:56Z",
  "direction": "incoming",
  "is_bounce_notification": true,
  "bounce_classification": "<string>",
  "delivery_attempts": [
    {
      "time": "2023-11-07T05:31:56Z",
      "log": "<string>",
      "status": "<string>"
    }
  ],
  "message_id": "<string>",
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "subject": "<string>",
  "tags": [
    "<string>"
  ],
  "sender": "[email protected]",
  "recipient": "[email protected]",
  "status": "<string>",
  "num_attempts": 123,
  "click_count": 123,
  "open_count": 123,
  "reference_message_id": 123,
  "domain_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "account_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "content": "<string>",
  "content_parsed": {
    "parts": [
      {
        "content_type": "text/html",
        "content": "<string>"
      }
    ],
    "attachments": [
      {
        "filename": "document.pdf",
        "content": "<string>",
        "content_type": "application/pdf",
        "content_id": "[email protected]"
      }
    ],
    "headers": {
      "Content-Type": [
        "text/html; charset=utf-8"
      ],
      "X-Custom-Header": [
        "value1",
        "value2"
      ]
    }
  }
}