curl --request GET \
  --url https://api.unibee.dev/merchant/email/history_list \
  --header 'Authorization: Bearer <token>'

{
  "code": 123,
  "data": {
    "emailHistories": [
      {
        "attachFile": "<string>",
        "content": "<string>",
        "createTime": 123,
        "email": "<string>",
        "gatewayName": "<string>",
        "id": 123,
        "merchantId": 123,
        "response": "<string>",
        "status": 123,
        "title": "<string>"
      }
    ],
    "emailHistoryStatistics": {
      "totalFail": 123,
      "totalSend": 123,
      "totalSuccess": 123
    },
    "total": 123
  },
  "merchantId": 123,
  "message": "<string>",
  "redirect": "<string>",
  "requestId": "<string>"
}