AI
How to Automate 10,000+ Retail Email Campaigns with n8n: 85% Faster Processing Case Study
The problem was simple: the premium perfume campaigns required personalized offer matching, and their current automations couldn't handle the scale.
This meant:
- 50+ email marketing campaigns monthly, each with multiple offers
- 10,000+ contacts requiring automated personalization and email segmentation
- Memory overflow issues when processing over 1,000 contacts in their workflow automation
- Duplicate emails destroying customer trust and email deliverability
- Marketing team drowning in Excel files instead of marketing automation strategy
We replaced Make.com workflows with memory-optimized n8n automation:
- Built sequential processing architecture preventing system crashes at any scale.
- Automated the entire email pipeline:
- Monday.com to n8n workflow automation
- Batch processing with intelligent offer matching
- Duplicate prevention via Supabase
- Automated email delivery through SendGrid
- Delivered instant ROI: 85% faster processing, zero downtime, marketing team refocused on strategy.
The retailer achieved 85% faster email campaign execution, processing 50+ monthly campaigns with zero system crashes. €20,000 monthly operational savings delivered ROI within 6 weeks, while the marketing team reclaimed 100+ hours monthly for strategic work instead of Excel management.
Most critically, their n8n email automation platform now handles 10x the volume with high reliability, enabling personalized email marketing that before was impossible.





