Automate customer retention with AI risk prediction, Stripe coupons & personalized Gmail

Automate customer retention with AI risk prediction, Stripe coupons & personalized Gmail

Lifecycle & Email
n8n
It goes past the alert, generating a Stripe discount code and drafting the email that carries the offer to the customer.
Source
n8n
Tools
CRM, Postgres, OpenAI, Stripe, Gmail
Runs
Scheduled
Cost
Free template, API costs
Last updated
August 7, 2026

What it is.

It aggregates three sources: customer profiles from your CRM, support ticket history over an API, and product usage logs from PostgreSQL. An AI step computes a churn risk score per customer.

Above a score of 0.7 it generates a unique Stripe discount coupon, drafts a personalized retention email, sends it through Gmail, and logs the whole action to Google Sheets so you can measure whether the offer worked.

What you get.

  • A churn risk score per customer, built from CRM, support, and usage data.
  • A 0.7 threshold that decides who gets an intervention.
  • A unique Stripe coupon generated per at-risk customer.
  • A personalized retention email drafted from that customer's own signals.
  • A Google Sheets log of every action, which is how you measure the program.
HOW TO USE IT

How to set it up.

1

Connect the CRM, the support API, and the Postgres instance holding usage before you touch the scoring step.

2

Check the usage query returns what you think it does, since usage is the strongest of the three signals.

3

Read the first batch of scores against accounts you know, and move the 0.7 threshold to match reality.

4

Set coupon terms in Stripe deliberately, because a discount is margin you will not get back.

5

Review the drafted emails before enabling the send, as a badly aimed retention offer teaches a customer to wait for one.

6

Watch the Sheets log for save rate, and stop the program if discounted customers churn anyway.

Use cases

Go past the alert

Generate the discount code and draft the message in the same run.

Set the intervention threshold

Move the risk line so only the accounts worth an offer get one.

Keep a human on send

Review the drafted email before it reaches a paying customer.

Best for

Self-serve subscriptions

A coupon is a viable intervention when there is no account manager to call.

Testing whether discounts save anyone

The log gives you the data to find out, which is worth more than the coupons.

Usage-based churn

Postgres usage logs are the earliest signal in the stack, and this reads them directly.

Open the original.

Hosted on n8n, free to open.
Open the Tool

Questions about Automate customer retention with AI risk prediction, Stripe coupons & personalized Gmail

How many integrations does this need?
Is discounting at-risk customers a good idea?
Is the 0.7 threshold meaningful?

Questions about Lifecycle & Email

Which retention signal is worth weighting most?
Should retention offers be automated?
Strengths
  • It ends in an action a customer receives, which is rare in retention templates.
  • The threshold is a single number you can move as you learn.
  • Every action is logged, so the discount program can be evaluated instead of assumed.
Limitations
  • Discounting at-risk customers trains price expectations, so treat this as an experiment with a stop rule.
  • It needs CRM, a support API, Postgres, OpenAI, Stripe, and Gmail all connected, which is six integrations before the first run.
  • The 0.7 threshold is the author's, and a score from somebody else's model means nothing on your data.
  • Emails send from a Gmail mailbox, so retention deliverability rides on one address.
Skip this if
  • Skip it if you have no Stripe billing to generate the offer against.
Ideal for
  • Growth leads
  • Customer success leads
  • Stage: Series A onward

Want this running without building it yourself?

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