Handle retail payment failures with retry emails, Slack alerts and Supabase logging

Retail Payment Failure Alerts with Retry Emails, Slack & Supabase

This n8n workflow automatically handles failed payment events from payment gateways such as Stripe, Shopify, PayPal or WooCommerce. It receives payment failure webhooks, standardizes the incoming data, identifies the reason for failure and classifies each case into:

- Soft Failure (temporary / retryable) - Hard Failure (permanent / non-retryable) - Fraudulent Failure (high-risk / suspicious)

Based on the classification, the workflow automatically:

- Sends internal Slack alerts - Emails customers to retry failed payments - Applies retry limits with wait delays - Flags fraud cases instantly - Stores all payment failures in Supabase

It helps businesses recover lost revenue, reduce manual payment support work and detect suspicious transactions early.

Quick Implementation Steps

1. [Import this JSON workflow into your n8n account](https://n8n.partnerlinks.io/om1efg2qgvwi). 2. Connect your payment provider webhook endpoint. 3. Add Slack API credentials. 4. Add Gmail credentials for customer retry emails. 5. Add Supabase credentials for failure logging. 6. Enable the workflow — done!