n8n Sneaker Restock Alerts: ScrapeUnblocker + Gmail

Never miss a sneaker restock—automated alerts with n8n, ScrapeUnblocker, and Gmail

This n8n workflow checks your monitored sneaker product pages on a schedule, scrapes each page with ScrapeUnblocker, detects stock-status changes, updates your Google Sheets, and emails you a restock alert through Gmail.

What this workflow does

• Runs on a minute-based schedule: triggers on an interval you set to check availability.
• Reads monitored URLs from Google Sheets: pulls product URLs and the last known status from your “Products” tab (for example, columns like Product URL, Last Known Status, and row_number).
• Scrapes each product page with ScrapeUnblocker: fetches the page HTML using a US proxy (as configured in your ScrapeUnblocker setup).
• Extracts key details: product name, price, stock status, available quantity, and rating from the scraped HTML.
• Detects changes: compares the current stock-status to the previous status stored in Sheets.
• Updates Google Sheets automatically: when a status change is detected, it writes the latest status/price and the last-checked timestamp back to the correct row.
• Sends a restock email via Gmail: delivers an HTML restock alert with product details and a direct link to the product page.

Use cases

• Track multiple sneaker releases or daily drops and get notified immediately when stock returns.
• For SaaS operators and automation engineers: centralize monitoring inputs in Google Sheets and send consistent email alerts via Gmail.
• Reduce manual checking while maintaining a controlled schedule to respect scraping and email limits.

Technical details

• n8n trigger: minute-based schedule trigger.
• Google Sheets: read monitored rows and update stock changes.
• ScrapeUnblocker: scrape product HTML using a US proxy configuration.
• Logic & flow control: if, code, and split in batches to process items efficiently.
• Email delivery: Gmail node sends HTML restock alerts to your specified recipient.
• Notes: uses a sticky note for workflow guidance.

Setup required: add Google Sheets credentials and point to your spreadsheet/tab, configure ScrapeUnblocker credentials/proxy settings, add Gmail credentials, set the recipient email, and tune the schedule interval.