The flow
Starts it 1Logic 7Service 4
The steps in the order they run, from what starts it.
- 1Schedule Trigger (Every 3 Days at 10AM)Schedule triggerStarts it
- 2Read Domain List from Google SheetsGoogle SheetsService
- 3Prepare Domain List and Set ThresholdCodeLogic
- 4Split Into Individual DomainsCodeLogic
- 5Check SSL Certificate via OpenSSLExecute CommandService
- 6Parse SSL Results and Identify Expiring CertsCodeLogic
- 7Has Expiring CertificatesIfLogic
- 8Split Results for Sheet UpdateCodeLogic
- 9Build HTML Email AlertCodeLogic
- 10No Alerts Needed (All Certs OK)No OpLogic
- 11Update Google Sheet with ResultsGoogle SheetsService
- 12Send Alert Email via SMTPEmail SendService
How it's built
- Starts on
- A clock
- Steps
- 12, with 1 branch
- Size
- Medium: a working afternoon
- Connects to
- Email, Google Sheets
- Model
- None. This is plumbing, not judgement
Questions
What does it need to run?
An n8n account, plus your own Email and Google Sheets accounts. You connect your own accounts after importing it; none are included.
What starts it?
It starts on a clock.
Does it use AI?
No. Every step is fixed logic or a call to a service, so it does the same thing every time.
How long does it take to set up?
Plan an afternoon. 12 steps is enough that you should read each one before running it.
How do I import it?
Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.
Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 12 steps before you point it at anything that matters.