Automation library · Data collection

Register event attendance with Google Sheets and Gmail

Started by another system calling it, and works across Gmail and Google Sheets. 11 steps, 2 branches: a working afternoon to understand properly.

Medium

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11 stepsMedium: a working afternoon
2Branches: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 4Logic 4Service 3

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

  1. 1Receive Webhook DataWebhookStarts it
  2. 2Check Input ValidityCodeLogic
  3. 3Check Validity StatusIfLogic
  4. 4Retrieve Sheet DataGoogle SheetsService
  5. 5Return Error ResponseRespond To WebhookStarts it
  6. 6Identify DuplicatesCodeLogic
  7. 7If Duplicate ExistsIfLogic
  8. 8Return Duplicate ResponseRespond To WebhookStarts it
  9. 9Add New Entry to SheetsGoogle SheetsService
  10. 10Dispatch Confirmation EmailGmailService
  11. 11Return Success ResponseRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
11, with 2 branches
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets
Model
None. This is plumbing, not judgement

Questions

What does it need to run?

An n8n account, plus your own Gmail and Google Sheets accounts. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

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. 11 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.

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 11 steps before you point it at anything that matters.