This workflow follows the Gmail → Google Sheets recipe pattern — see all workflows that pair these two integrations.
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 →
{
"id": "Qj1307oyBx1hZJy5",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "SSL Expiry Alert",
"tags": [
{
"id": "aqlZb2qfWiaT4Xr5",
"name": "IT Ops",
"createdAt": "2025-01-03T12:20:11.917Z",
"updatedAt": "2025-01-03T12:20:11.917Z"
},
{
"id": "zJaZorWWcGpTp35U",
"name": "DevOps",
"createdAt": "2025-01-03T12:19:34.273Z",
"updatedAt": "2025-01-03T12:19:34.273Z"
}
],
"nodes": [
{
"id": "260b66a2-0841-4dc7-9666-acbc9317fd91",
"name": "URLs to Monitor",
"type": "n8n-nodes-base.googleSheets",
"position": [
1120,
-120
],
"parameters": {
"columns": {
"value": {
"URL": "={{ $json.result.host }}",
"KnownExpiryDate": "={{ $json.result.valid_till }}"
},
"schema": [
{
"id": "Website ",
"type": "string",
"display": true,
"removed": true,
"required": false,
"displayName": "Website ",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "URL",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "URL",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "KnownExpiryDate",
"type": "string",
"display": true,
"required": false,
"displayName": "KnownExpiryDate",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "row_number",
"type": "string",
"display": true,
"removed": true,
"readOnly": true,
"required": false,
"displayName": "row_number",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [
"URL"
]
},
"options": {},
"operation": "update",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1VfsX4cW2oKQ3ZHUjBvGk--d1X7509c6__b6gPvA5VpI/edit#gid=0",
"cachedResultName": "URLs to Check"
},
"documentId": {
"__rl": true,
"mode": "url",
"value": "https://docs.google.com/spreadsheets/d/1VfsX4cW2oKQ3ZHUjBvGk--d1X7509c6__b6gPvA5VpI/edit?gid=0#gid=0"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.5
},
{
"id": "a2922f1b-9d29-4b66-9560-44207f3e14d2",
"name": "Weekly Trigger",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
160,
140
],
"parameters": {
"rule": {
"interval": [
{
"field": "weeks",
"triggerAtDay": [
1
],
"triggerAtHour": 8
}
]
}
},
"typeVersion": 1.2
},
{
"id": "005564e9-5ecb-4ee9-aca0-69a660656b09",
"name": "Fetch URLs",
"type": "n8n-nodes-base.googleSheets",
"position": [
420,
140
],
"parameters": {
"options": {},
"sheetName": {
"__rl": true,
"mode": "url",
"value": "https://docs.google.com/spreadsheets/d/1pnUfIkD90MUG99Fp0vRoAB-w-GPSAwRZw0-JsNl-h3s/edit?gid=0#gid=0"
},
"documentId": {
"__rl": true,
"mode": "url",
"value": "https://docs.google.com/spreadsheets/d/1pnUfIkD90MUG99Fp0vRoAB-w-GPSAwRZw0-JsNl-h3s/edit?usp=sharing"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.5
},
{
"id": "943c561c-ca89-461c-a6fb-c3011baaf81a",
"name": "Check SSL",
"type": "n8n-nodes-base.httpRequest",
"position": [
680,
140
],
"parameters": {
"url": "=https://ssl-checker.io/api/v1/check/{{ $json[\"URL\"].replace(/^https?:\\/\\//, \"\").replace(/\\/$/, \"\") }}",
"options": {}
},
"typeVersion": 4.2
},
{
"id": "911fa691-decf-4572-a46e-d8644d3b2a35",
"name": "Expiry Alert",
"type": "n8n-nodes-base.if",
"position": [
1120,
220
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "ee6e2ce8-569a-4f1f-91b5-2c55f605a16b",
"operator": {
"type": "number",
"operation": "lte"
},
"leftValue": "={{ $json.result.days_left }}",
"rightValue": 7
}
]
}
},
"typeVersion": 2.2
},
{
"id": "8b59ebbb-0a87-40c2-be79-cc38431ebdbd",
"name": "Send Alert Email",
"type": "n8n-nodes-base.gmail",
"position": [
1440,
240
],
"parameters": {
"sendTo": "phanineeraj@quantana.com",
"message": "=SSL Expiry - {{ $json.result.days_left }} Days Left - {{ $json.result.host }}",
"options": {
"appendAttribution": false
},
"subject": "=SSL Expiry - {{ $json.result.days_left }} Days Left - {{ $json.result.host }}",
"emailType": "text"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "32eebd68-f0e6-467c-bf65-f2d513a60666",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
100,
0
],
"parameters": {
"height": 329.860465116279,
"content": "Triggers the workflow once a week."
},
"typeVersion": 1
},
{
"id": "3c0ed796-94a4-488c-9cb7-e3d46db63815",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
360,
0
],
"parameters": {
"height": 327.0154373927959,
"content": "Pulls the list of URLs to monitor from the Google Sheet. Ensure you clone the Google Sheet worksheet and update this node with its URL."
},
"typeVersion": 1
},
{
"id": "fdb2077c-7d6a-4255-b499-e90513a0de1d",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
620,
0
],
"parameters": {
"height": 323.89365351629556,
"content": "Uses SSL-Checker.io to verify the SSL certificate of each URL. Fetches details like the host, validity period, and days remaining until expiry."
},
"typeVersion": 1
},
{
"id": "5cc1644b-6abc-4299-8a25-9507b09d863f",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
1060,
-260
],
"parameters": {
"height": 344.1852487135509,
"content": "Updates the Google Sheet with SSL details, including the expiry date and certificate status."
},
"typeVersion": 1
},
{
"id": "1001a69e-8efc-4a8b-a97b-a1bc021ada35",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
1060,
140
],
"parameters": {
"height": 344.1852487135509,
"content": "Checks if any SSL certificate is set to expire in 7 days or less."
},
"typeVersion": 1
},
{
"id": "ad9e359e-3d95-4e8c-97b0-d06475bb8883",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
1360,
140
],
"parameters": {
"height": 344.1852487135509,
"content": "Sends an email alert if an SSL certificate is nearing expiry, including the host and days remaining."
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"timezone": "Asia/Kolkata",
"callerPolicy": "workflowsFromSameOwner",
"errorWorkflow": "rL70w0U4LV2l9a5b",
"executionOrder": "v1"
},
"versionId": "f60d6e6e-dace-497a-b58b-113993ec36e5",
"connections": {
"Check SSL": {
"main": [
[
{
"node": "URLs to Monitor",
"type": "main",
"index": 0
},
{
"node": "Expiry Alert",
"type": "main",
"index": 0
}
]
]
},
"Fetch URLs": {
"main": [
[
{
"node": "Check SSL",
"type": "main",
"index": 0
}
]
]
},
"Expiry Alert": {
"main": [
[
{
"node": "Send Alert Email",
"type": "main",
"index": 0
}
]
]
},
"Weekly Trigger": {
"main": [
[
{
"node": "Fetch URLs",
"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.
gmailOAuth2googleSheetsOAuth2Api
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How this works
Stay ahead of website security risks by receiving timely email alerts when SSL certificates on your domains are nearing expiry, preventing potential downtime and compliance issues. This workflow suits website administrators and IT teams managing multiple sites, automating the monitoring process to save manual effort. It pulls a list of URLs from Google Sheets on a weekly schedule, checks each certificate's validity via HTTP requests, and triggers a Gmail notification if expiry is imminent within a set threshold.
Use this workflow for proactive maintenance of live websites where SSL lapses could disrupt services or expose vulnerabilities, especially with 10 or more domains. Avoid it for one-off checks or environments requiring real-time monitoring, as the weekly cron trigger may not suffice for high-stakes scenarios. Common variations include adjusting the alert threshold to 30 days or integrating with Slack instead of Gmail for team notifications.
About this workflow
SSL Expiry Alert. Uses googleSheets, scheduleTrigger, httpRequest, gmail. Scheduled trigger; 12 nodes.
Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →
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