https://dev.to/alexanderschau/how-i-built-a-covid-19-newsletter-with-n8n-in-just-5-minutes

workflow.json

{
  "name": "COVID",
  "nodes": [
    {
      "parameters": {},
      "name": "Start",
      "type": "n8n-nodes-base.start",
      "typeVersion": 1,
      "position": [
        400,
        400
      ]
    },
    {
      "parameters": {
        "functionCode": "\nconst date = new Date(new Date().setDate(new Date().getDate() - 1)).toISOString().split(\"T\")[0].split(\"-\");\nitem.date = `${date[1]}-${date[2]}-${date[0]}`;\nreturn item;"
      },
      "name": "Get Date",
      "type": "n8n-nodes-base.functionItem",
      "typeVersion": 1,
      "position": [
        600,
        400
      ]
    },
    {
      "parameters": {
        "url": "=https://raw.githubusercontent.com/CSSEGISandData/COVID-19/master/csse_covid_19_data/csse_covid_19_daily_reports/{{$json[\"date\"]}}.csv",
        "responseFormat": "file",
        "options": {},
        "headerParametersUi": {
          "parameter": []
        },
        "queryParametersUi": {
          "parameter": []
        }
      },
      "name": "Fetch Script",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 1,
      "position": [
        800,
        400
      ]
    },
    {
      "parameters": {
        "options": {}
      },
      "name": "Convert 2 JSON",
      "type": "n8n-nodes-base.spreadsheetFile",
      "typeVersion": 1,
      "position": [
        1000,
        500
      ]
    },
    {
      "parameters": {
        "functionCode": "items[0].json.myVariable = 1;\nreturn items.filter(item => item.json.Combined_Key == \"Berlin, Germany\");"
      },
      "name": "Filter region",
      "type": "n8n-nodes-base.function",
      "typeVersion": 1,
      "position": [
        1200,
        500
      ]
    },
    {
      "parameters": {
        "options": {}
      },
      "name": "Send Email",
      "type": "n8n-nodes-base.emailSend",
      "typeVersion": 1,
      "position": [
        1400,
        500
      ]
    }
  ],
  "connections": {
    "Get Date": {
      "main": [
        [
          {
            "node": "Fetch Script",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Script": {
      "main": [
        [
          {
            "node": "Convert 2 JSON",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Convert 2 JSON": {
      "main": [
        [
          {
            "node": "Filter region",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Start": {
      "main": [
        [
          {
            "node": "Get Date",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Filter region": {
      "main": [
        [
          {
            "node": "Send Email",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "timezone": "Europe/London",
    "executionTimeout": -1
  },
  "id": "9"
}