Laposta
From Deliverability Audit
to KumoMTA Migration
Laposta started with a comprehensive deliverability audit and ended with a full migration to PostMTA, achieving measurable improvements in inbox placement, delivery speed, and operational efficiency.
15%
Inbox Boost
4x
Bounce Reduction
85%
Faster Delivery
Company Profile
About Laposta
Laposta is a European email marketing platform that helps businesses create, send, and optimize their email campaigns. Serving thousands of customers across multiple industries, Laposta's platform handles millions of messages each month for a diverse range of use cases.
As a full-service email platform, Laposta's success depends directly on the deliverability of their customers' campaigns. When they began experiencing deliverability challenges and limitations with their existing infrastructure, they knew it was time for a comprehensive evaluation and change.
The Challenge
Deliverability Issues Holding Back Growth
Laposta was facing growing deliverability challenges that directly impacted their customers' campaign performance. Inbox placement rates were inconsistent, bounce rates were climbing, and their existing infrastructure lacked the tools needed to diagnose and resolve these issues effectively.
- closeDeclining inbox placement rates affecting customer campaign performance
- closeHigh bounce rates damaging sender reputation
- closeLimited visibility into delivery patterns and ISP-level issues
- closeLegacy infrastructure lacked modern deliverability tooling
- closeGrowing customer base demanding better results
- closeNo systematic approach to diagnosing and fixing delivery problems
The Solution
Audit-First Approach Leading to Migration
Laposta engaged PostMTA for a comprehensive deliverability audit to understand the root causes of their challenges. The audit analyzed sending patterns, ISP feedback, authentication configuration, IP reputation, and infrastructure performance.
The audit findings were clear: a full migration to PostMTA's KumoMTA-powered platform would address the root causes and unlock significant improvements. Laposta proceeded with the migration, leveraging PostMTA's advanced deliverability features including automated IP warmup, ISP-level analytics, DKIM management, and real-time bounce categorization.
Results
Measurable Deliverability Improvements
15%
Inbox Placement
Deliverability uplift
4x
Bounce Reduction
Fewer rejected messages
85%
Faster Delivery
Reduced delivery time
100%
Root Cause Found
Audit-to-action success
Before vs. After Migration
| Metric | Before Migration | After Migration | Improvement |
|---|---|---|---|
| Inbox Placement Rate | ~78% | ~93% | +15% |
| Bounce Rate | ~8% | ~2% | 4x reduction |
| Average Delivery Time | ~45 min | ~7 min | 85% faster |
| Sender Reputation | Declining | Improving | Reversed trend |
| Infrastructure Visibility | Limited | Full | Complete analytics |
“Starting with a deliverability audit was the right decision. It gave us a clear understanding of what was wrong and what we needed to fix. The migration to PostMTA has transformed our email delivery — our customers noticed the difference immediately, and our metrics have never looked better. The audit-to-migration approach took the guesswork out of the entire process.”
Head of Product
Laposta
Start with a Deliverability Audit
Like Laposta, you can start with a comprehensive audit to understand your email delivery challenges and discover how PostMTA can help. Deploy on your own infrastructure with AI-powered setup in under 30 minutes. Built on KumoMTA for maximum performance.