n8n: Email Digest to Slack

{
  "name": "Email Digest to Slack",
  "nodes": [
    {
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "parameters": {
        "rule": { "interval": [{ "field": "minutes", "minutesInterval": 15 }] }
      }
    },
    {
      "name": "Gmail",
      "type": "n8n-nodes-base.gmail",
      "parameters": {
        "operation": "getAll",
        "filters": {
          "labelIds": ["INBOX"],
          "readStatus": "unread",
          "receivedAfter": "={{ $now.minus(15, 'minutes').toISO() }}"
        },
        "limit": 20
      }
    },
    {
      "name": "Filter Important",
      "type": "n8n-nodes-base.filter",
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{ $json.labelIds.join(',') }}",
              "operation": "contains",
              "value2": "IMPORTANT"
            }
          ]
        }
      }
    },
    {
      "name": "Format Digest",
      "type": "n8n-nodes-base.code",
      "parameters": {
        "jsCode": "const emails = items.map(i => `• ${i.json.subject} — ${i.json.from}`).join('\n'); return [{ json: { text: `*Email digest (last 15 min):*\n${emails || 'Nothing important.'}` } }];"
      }
    },
    {
      "name": "Slack",
      "type": "n8n-nodes-base.slack",
      "parameters": {
        "resource": "message",
        "operation": "post",
        "channel": "#email-digest",
        "text": "={{ $json.text }}"
      }
    }
  ],
  "connections": {
    "Schedule Trigger": { "main": [[{ "node": "Gmail" }]] },
    "Gmail": { "main": [[{ "node": "Filter Important" }]] },
    "Filter Important": { "main": [[{ "node": "Format Digest" }]] },
    "Format Digest": { "main": [[{ "node": "Slack" }]] }
  }
}