Turn scattered customer feedback into an early-warning system
Collect feedback through a simple form, score its sentiment with AI, log everything centrally, and get a WhatsApp alert the moment something genuinely negative comes in.
What this looks like
One step on screen at a time. Read it, do it, tap Next.
Turn scattered customer feedback into an early-warning system
Step 1 of 11
Create the workflow with a Form Trigger
Create a workflow and add a Form Trigger node. Build the form fields directly in the node — Name, Email, Rating (1 to 5), and Comments.
Checkpoint
Submitting the form produces a test item with all four fields.
Before you begin
Tick these off as you sort them. Stopping halfway to create an account is how a fifteen-minute build becomes an hour.
0 of 9 ready
Ticks are saved on this device, so you can come back to them.
- Have ready
This walkthrough uses n8n's built-in Form Trigger, so you don't need a separate form tool, but you do need to know what questions you want to ask.
- API key
Used to score sentiment and summarise longer feedback. Set a spending limit before you start.
OpenAI API keys - Account
All submissions, scored and timestamped, land in a Google Sheet you can review and report from.
- Account
Alerts for negative feedback go out over WhatsApp, so you need an approved sender number set up through Meta or a provider such as Twilio.
WhatsApp Business Platform - Know-how
Decide whether a single low rating triggers an alert, or whether it needs both a low score and negative sentiment text, to avoid alert fatigue.
- Time
The workflow is simple; agreeing what counts as urgent takes the most thought.
The basics — ticked once, remembered everywhere
- Account
Either the hosted version or a self-hosted install. Everything here works the same on both — the only visible difference is the shape of your webhook URLs.
Create a workspace - Know-how
Adding a node, connecting two of them, and pressing Execute. If any of that is new, the free primer covers it in about ten minutes.
- Credential
You will paste at least one secret during setup. A password manager beats a notes app, and it stops you pasting a live key into a chat window by accident.
The shape of the workflow
The nodes you will end up with, left to right, in the order you add them.
4 things to set here- 1Form Trigger — the trigger — everything starts here
- 2OpenAI — Score the sentiment of the written comments
- 3Google Sheets — Log every submission
- 4If — Decide what counts as urgent
Skip the node hunting
Import a starter file with every node for this build already on the canvas, named after its step and wired in order, each one carrying a sticky note with the values to enter. You still connect your own accounts and fill the fields — that is what the walkthrough takes you through — but you never start at a blank canvas.
In n8n: Workflows → Import from file.
What you will build
Jump straight to any step, or print the list and tick it off beside your n8n tab.
- 1Create the workflow with a Form Trigger
- 2Score the sentiment of the written comments
- 3Log every submission
- 4Decide what counts as urgent
- 5Send the WhatsApp alert
- 6Add a lighter Slack summary for everything else
- 7Send a thank-you to the customer
- 8Publish the form and share the link
- 9Submit deliberately positive feedback
- 10Submit deliberately negative feedback
- 11Submit feedback with no written comment
If something goes wrong
Everything ready?
Start walkthrough