High-volume Email for E-commerce Platform
E-commerce Platform — Retail / E-commerce
“10x faster campaign completion, 99.9% delivery rate”
The Challenge
A growing e-commerce platform was experiencing severe performance issues with Mautic. Their Black Friday campaign took 6 hours to complete, and several campaigns failed mid-send due to server timeouts.
Key issues:
• Campaigns with 100k+ contacts took hours to send
• Server crashed under heavy load
• Poor bounce handling led to deliverability issues
• No visibility into email queue status
Our Approach
We conducted a thorough performance audit and identified the bottlenecks: single-threaded queue processing, insufficient resources, and no proper email service integration.
Our optimization plan:
• Implement parallel queue processing with multiple workers
• Migrate to AWS SES for reliable, high-volume sending
• Set up proper bounce and complaint handling
• Deploy monitoring dashboard
The Solution
We rebuilt their email infrastructure with Kubernetes-based parallel processing and AWS SES integration with batch sending.
- ✓Kubernetes-based worker pods
- ✓AWS SES integration with batch API
- ✓Redis queue with parallel consumers
- ✓Real-time monitoring dashboard
- ✓Automated bounce/complaint handling
- ✓Alerting for queue depth and failures
Results
The next Black Friday campaign completed in 35 minutes instead of 6 hours. Delivery rates improved significantly due to proper bounce handling.
“We went from campaigns taking 6 hours to completing in under an hour. Black Friday was smooth for the first time ever.”
Technologies Used
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