Make: Slack Channel Digest

{
  "name": "Slack Channel Digest",
  "flow": [
    {
      "id": 1,
      "module": "builtin:BasicScheduler",
      "version": 1,
      "parameters": {
        "interval": "daily",
        "time": "17:00"
      },
      "mapper": {},
      "metadata": { "designer": { "x": 0, "y": 0 } }
    },
    {
      "id": 2,
      "module": "http:makeRequest",
      "version": 1,
      "parameters": {},
      "mapper": {
        "url": "https://slack.com/api/conversations.history",
        "method": "GET",
        "qs": [
          { "name": "channel", "value": "YOUR_CHANNEL_ID" },
          { "name": "oldest", "value": "{{addHours(now; -24) | formatDate('X')}}" },
          { "name": "limit", "value": "100" }
        ],
        "headers": [
          { "name": "Authorization", "value": "Bearer YOUR_SLACK_TOKEN" }
        ]
      },
      "metadata": { "designer": { "x": 300, "y": 0 } }
    },
    {
      "id": 3,
      "module": "builtin:BasicAggregator",
      "version": 1,
      "parameters": {},
      "mapper": {
        "values": "{{2.data.messages}}"
      },
      "metadata": { "designer": { "x": 600, "y": 0 } }
    },
    {
      "id": 4,
      "module": "slack:sendMessage",
      "version": 1,
      "parameters": {
        "channel": "#daily-digest"
      },
      "mapper": {
        "text": ":newspaper: *Daily Channel Digest*\nMessages today: {{length(2.data.messages)}}\nCheck #general for the full conversation."
      },
      "metadata": { "designer": { "x": 900, "y": 0 } }
    }
  ],
  "metadata": { "version": 1 }
}