Kristian This workflow corresponds to n8n.io template #16327 — we link there as the canonical source.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"meta": {
"templateCredsSetupCompleted": false
},
"name": "Check Due Reminders (Outlook + Telegram)",
"nodes": [
{
"id": "f16b0b92-79ce-46fe-934d-b1d24268ef1a",
"name": "\ud83d\udccb Setup & Operations",
"type": "n8n-nodes-base.stickyNote",
"position": [
-620,
-504
],
"parameters": {
"color": 4,
"width": 560,
"height": 420,
"content": "## Setup\n1. **Microsoft Outlook OAuth2** \u2192 pick calendar (`YOUR_OUTLOOK_CALENDAR_ID` or re-select in UI).\n2. **Telegram Bot API** \u2192 set `YOUR_TELEGRAM_GROUP_CHAT_ID` on all Telegram send nodes (not the Trello hub chat ID).\n3. Edit reminder message text and @mentions for your team.\n4. Schedule: **Trigger weekly** (default Monday)\u2014adjust in the Schedule Trigger.\n5. Calendar events should include a check identifier in the subject (workflow filters by subject pattern).\n\n## Operation\n- Weekly: lists Outlook events due today, tomorrow, and within the week \u2192 Telegram digest per window.\n\n## Credentials\nMicrosoft Outlook OAuth2 API, Telegram Bot API"
},
"typeVersion": 1
},
{
"id": "87aed03f-c258-490b-b8ac-bee9ef9e9994",
"name": "Get many events",
"type": "n8n-nodes-base.microsoftOutlook",
"position": [
224,
16
],
"parameters": {
"fields": [
"subject",
"start"
],
"output": "fields",
"filters": {},
"resource": "event",
"returnAll": true,
"calendarId": {
"__rl": true,
"mode": "id",
"value": "YOUR_OUTLOOK_CALENDAR_ID",
"cachedResultName": "Calendar"
},
"fromAllCalendars": false
},
"credentials": {
"microsoftOutlookOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 2
},
{
"id": "eef2f5c9-7577-47d8-8460-f33c7568696e",
"name": "If item length is zero",
"type": "n8n-nodes-base.if",
"position": [
672,
16
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "b35e42a6-6a5f-45c1-953a-ac7a352703ad",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ Object.keys($items(\"Filter checks due this week\")[0].json).length === 0 }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.3
},
{
"id": "b4258999-105f-4158-a736-6317db88c354",
"name": "Aggregate",
"type": "n8n-nodes-base.aggregate",
"position": [
896,
16
],
"parameters": {
"options": {},
"fieldsToAggregate": {
"fieldToAggregate": [
{
"fieldToAggregate": "subject"
},
{
"fieldToAggregate": "start.dateTime"
}
]
}
},
"typeVersion": 1
},
{
"id": "f9e74e97-5531-45b5-9db1-92fbd9fe117e",
"name": "Trigger weekly on Sunday",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
0,
16
],
"parameters": {
"rule": {
"interval": [
{
"field": "weeks",
"triggerAtHour": 18
}
]
}
},
"typeVersion": 1.3
},
{
"id": "fba5b726-103f-42d2-9a65-6293df97ef29",
"name": "Filter checks due day before",
"type": "n8n-nodes-base.filter",
"position": [
448,
-224
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "0b04a4a5-0bae-459a-8112-57d4ac74c9f9",
"operator": {
"type": "dateTime",
"operation": "before"
},
"leftValue": "={{ DateTime.fromISO($json.start.dateTime) }}",
"rightValue": "={{ DateTime.now().plus({ hours: 24 }) }}"
},
{
"id": "8dab4e08-0973-4705-869e-b5c813496fea",
"operator": {
"type": "dateTime",
"operation": "after"
},
"leftValue": "={{ DateTime.fromISO($json.start.dateTime) }}",
"rightValue": "={{ DateTime.now() }}"
}
]
}
},
"typeVersion": 2.3
},
{
"id": "0ba2cbc0-201a-42e7-bd51-fb61fbe39f03",
"name": "Aggregate check data",
"type": "n8n-nodes-base.aggregate",
"position": [
672,
-224
],
"parameters": {
"options": {},
"fieldsToAggregate": {
"fieldToAggregate": [
{
"fieldToAggregate": "subject"
},
{
"fieldToAggregate": "start.dateTime"
}
]
}
},
"typeVersion": 1
},
{
"id": "c0605eb1-34ca-4cf9-8326-e1f7022a7111",
"name": "Send reminder on checks due day before",
"type": "n8n-nodes-base.telegram",
"position": [
896,
-224
],
"parameters": {
"text": "=Checks due TOMORROW: \n\n{{ $json.subject.map((subj, index) => `\u2022 ${subj} (Date: ${$json.dateTime[index].split('T')[0]})`).join('\\n') }}\n\nFYI. @teammate4, @teammate1, @teammate2",
"chatId": "YOUR_TELEGRAM_GROUP_CHAT_ID",
"additionalFields": {
"appendAttribution": false
}
},
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "f34df9a5-3a9d-4166-ba1b-c11091b2ea27",
"name": "Send reminder on checks due for the week",
"type": "n8n-nodes-base.telegram",
"position": [
1120,
16
],
"parameters": {
"text": "=Checks due until next week: \n\n{{ $json.subject.map((subj, index) => `\u2022 ${subj} (Date: ${$json.dateTime[index].split('T')[0]})`).join('\\n') }}\n\nFYI. @teammate4, @teammate1, @teammate2",
"chatId": "YOUR_TELEGRAM_GROUP_CHAT_ID",
"additionalFields": {
"appendAttribution": false
}
},
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "643f7b88-259a-4d4f-8333-9bd0c2b6143e",
"name": "Trigger daily",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
0,
-224
],
"parameters": {
"rule": {
"interval": [
{}
]
}
},
"typeVersion": 1.3
},
{
"id": "edc079ca-67f0-4f3b-9684-71d66ee892a6",
"name": "Filter checks due today",
"type": "n8n-nodes-base.filter",
"position": [
448,
-464
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "0b04a4a5-0bae-459a-8112-57d4ac74c9f9",
"operator": {
"type": "dateTime",
"operation": "afterOrEquals"
},
"leftValue": "={{ DateTime.fromISO($json.start.dateTime) }}",
"rightValue": "={{ $today.startOf('day') }}"
},
{
"id": "cf98e9e5-f328-47d9-98f9-283421ba8cd3",
"operator": {
"type": "dateTime",
"operation": "beforeOrEquals"
},
"leftValue": "={{ DateTime.fromISO($json.start.dateTime) }}",
"rightValue": "={{ $today.endOf('day') }}"
}
]
}
},
"typeVersion": 2.3
},
{
"id": "0b378be0-1a7b-4ac0-88ab-492160174969",
"name": "Get events for today",
"type": "n8n-nodes-base.microsoftOutlook",
"position": [
224,
-464
],
"parameters": {
"fields": [
"subject",
"start"
],
"output": "fields",
"filters": {},
"resource": "event",
"returnAll": true,
"calendarId": {
"__rl": true,
"mode": "id",
"value": "YOUR_OUTLOOK_CALENDAR_ID",
"cachedResultName": "Calendar"
},
"fromAllCalendars": false
},
"credentials": {
"microsoftOutlookOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 2
},
{
"id": "5ac81301-7e5c-4a0c-9571-37375f3589b1",
"name": "Get events for tomorrow",
"type": "n8n-nodes-base.microsoftOutlook",
"position": [
224,
-224
],
"parameters": {
"fields": [
"subject",
"start"
],
"output": "fields",
"filters": {},
"resource": "event",
"returnAll": true,
"calendarId": {
"__rl": true,
"mode": "id",
"value": "YOUR_OUTLOOK_CALENDAR_ID",
"cachedResultName": "Calendar"
},
"fromAllCalendars": false
},
"credentials": {
"microsoftOutlookOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 2
},
{
"id": "9a690f0e-eaac-4683-9994-f061afa33ed9",
"name": "Aggregate check data for today",
"type": "n8n-nodes-base.aggregate",
"position": [
672,
-464
],
"parameters": {
"options": {},
"fieldsToAggregate": {
"fieldToAggregate": [
{
"fieldToAggregate": "subject"
},
{
"fieldToAggregate": "start.dateTime"
}
]
}
},
"typeVersion": 1
},
{
"id": "db0ab343-388a-4c4e-980d-1fd30850e747",
"name": "Send reminder on checks due today",
"type": "n8n-nodes-base.telegram",
"position": [
896,
-464
],
"parameters": {
"text": "=Checks due TODAY: \n\n{{ $json.subject.map((subj, index) => `\u2022 ${subj} (Date: ${$json.dateTime[index].split('T')[0]})`).join('\\n') }}\n\nFYI. @teammate4, @teammate1, @teammate2",
"chatId": "YOUR_TELEGRAM_GROUP_CHAT_ID",
"additionalFields": {
"appendAttribution": false
}
},
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "9c79b552-fb38-454c-9de7-8826d3a909a5",
"name": "Trigger daily at midnight",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
0,
-464
],
"parameters": {
"rule": {
"interval": [
{}
]
}
},
"typeVersion": 1.3
},
{
"id": "39c1b811-c702-4cd2-8625-5eae4e8b0ac6",
"name": "Filter checks due this week",
"type": "n8n-nodes-base.filter",
"position": [
448,
16
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "a5481142-920a-4075-b63b-de8525ae7009",
"operator": {
"type": "dateTime",
"operation": "afterOrEquals"
},
"leftValue": "={{ $json.start.dateTime }}",
"rightValue": "={{ $now }}"
},
{
"id": "9352e7a8-653b-4e7b-8d14-7ce307d9955e",
"operator": {
"type": "dateTime",
"operation": "beforeOrEquals"
},
"leftValue": "={{ $json.start.dateTime }}",
"rightValue": "={{ $now.plus({ week: 1 }) }}"
}
]
}
},
"typeVersion": 2.3,
"alwaysOutputData": true
},
{
"id": "0b184297-9ee0-458c-a108-53789deaa840",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-80,
-528
],
"parameters": {
"color": 5,
"width": 1408,
"height": 240,
"content": "## Reminder for checks due TODAY"
},
"typeVersion": 1
},
{
"id": "d82a1d24-c2e5-4a71-907b-4af224e1f686",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-80,
-288
],
"parameters": {
"color": 5,
"width": 1408,
"height": 240,
"content": "## Reminder for checks due TOMORROW"
},
"typeVersion": 1
},
{
"id": "83a7bd9e-f04a-4984-a790-66029af42e07",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-80,
-48
],
"parameters": {
"color": 5,
"width": 1408,
"height": 240,
"content": "## Reminder for checks due WITHIN THE WEEK"
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"binaryMode": "separate",
"callerPolicy": "workflowsFromSameOwner",
"timeSavedMode": "fixed",
"availableInMCP": false,
"executionOrder": "v1"
},
"connections": {
"Aggregate": {
"main": [
[
{
"node": "Send reminder on checks due for the week",
"type": "main",
"index": 0
}
]
]
},
"Trigger daily": {
"main": [
[
{
"node": "Get events for tomorrow",
"type": "main",
"index": 0
}
]
]
},
"Get many events": {
"main": [
[
{
"node": "Filter checks due this week",
"type": "main",
"index": 0
}
]
]
},
"Aggregate check data": {
"main": [
[
{
"node": "Send reminder on checks due day before",
"type": "main",
"index": 0
}
]
]
},
"Get events for today": {
"main": [
[
{
"node": "Filter checks due today",
"type": "main",
"index": 0
}
]
]
},
"If item length is zero": {
"main": [
[],
[
{
"node": "Aggregate",
"type": "main",
"index": 0
}
]
]
},
"Filter checks due today": {
"main": [
[
{
"node": "Aggregate check data for today",
"type": "main",
"index": 0
}
]
]
},
"Get events for tomorrow": {
"main": [
[
{
"node": "Filter checks due day before",
"type": "main",
"index": 0
}
]
]
},
"Trigger weekly on Sunday": {
"main": [
[
{
"node": "Get many events",
"type": "main",
"index": 0
}
]
]
},
"Trigger daily at midnight": {
"main": [
[
{
"node": "Get events for today",
"type": "main",
"index": 0
}
]
]
},
"Filter checks due this week": {
"main": [
[
{
"node": "If item length is zero",
"type": "main",
"index": 0
}
]
]
},
"Filter checks due day before": {
"main": [
[
{
"node": "Aggregate check data",
"type": "main",
"index": 0
}
]
]
},
"Aggregate check data for today": {
"main": [
[
{
"node": "Send reminder on checks due today",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
microsoftOutlookOAuth2ApitelegramApi
Pro
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About this workflow
This workflow monitors a Microsoft Outlook calendar on a schedule and sends Telegram group digests for events due today, tomorrow, and within the next week. Runs daily at midnight to fetch events from a selected Microsoft Outlook calendar and filters them to only those happening…
Source: https://n8n.io/workflows/16327/ — original creator credit. Request a take-down →
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