Automation library · Alerts and monitoring

Send certificate expiry alerts from Google Sheets with SMTP

Started by a clock, and works across Email and Google Sheets. 7 steps, 2 branches: small enough to read in one sitting and change without fear.

Small

Download free
7 stepsSmall: readable in one sitting
2Branches: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 1Logic 3Service 3

The steps in the order they run, from what starts it.

  1. 1Run daily expiry check at 7amSchedule triggerStarts it
  2. 2Get expiry register from Google SheetsGoogle SheetsService
  3. 3Sort items into expiry windowsCodeLogic
  4. 4Continue only if something needs actionIfLogic
  5. 5Check for already expired itemsIfLogic
  6. 6Send expired items alert emailEmail SendService
  7. 7Send upcoming renewals emailEmail SendService

How it's built

Starts on
A clock
Steps
7, with 2 branches
Size
Small: readable in one sitting
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?

Not long. At 7 steps it can be read in one sitting and changed without fear.

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.

Before you run it

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 7 steps before you point it at anything that matters.