Customer Case Studies

Lettermint builds sovereign European email infrastructure on KumoMTA and scales 100x

Facing a surge of European demand for transactional email that never touches US cloud infrastructure, Dutch provider...

Postmark cut transactional email delivery times by up to 40% with KumoMTA

By modernizing its MTA infrastructure and gaining real-time control over traffic shaping, Postmark improved resilience,...

Puresend reclaimed control of its email infrastructure in just two months

Facing industry consolidation and mounting instability, Puresend migrated from legacy MTAs to KumoMTA while maintaining...

Taguchi broke free from commercial MTA lock-in with open source

After years of rising costs and shifting vendor priorities, Taguchi rebuilt its email foundation on KumoMTA to regain...

Laposta achieved 3× faster throughput and 90% fewer IPs

Facing growing complexity and limited visibility, Laposta migrated from hundreds of Postfix instances to KumoMTA,...

AWeber achieved transparent, scalable email delivery and reclaimed control with KumoMTA

AWeber modernized its email infrastructure — gaining transparency, scalability, and full control with KumoMTA.

AhaSend turned email infrastructure into a competitive advantage

Frustrated by ESP limitations, AhaSend’s founders built their own email infrastructure on KumoMTA, turning a persistent...

Lettermint builds sovereign European email infrastructure on KumoMTA and scales 100x

Facing a surge of European demand for transactional email that never touches US cloud infrastructure, Dutch provider...

Postmark cut transactional email delivery times by up to 40% with KumoMTA

By modernizing its MTA infrastructure and gaining real-time control over traffic shaping, Postmark improved resilience,...

Puresend reclaimed control of its email infrastructure in just two months

Facing industry consolidation and mounting instability, Puresend migrated from legacy MTAs to KumoMTA while maintaining...

Taguchi broke free from commercial MTA lock-in with open source

After years of rising costs and shifting vendor priorities, Taguchi rebuilt its email foundation on KumoMTA to regain...

Laposta achieved 3× faster throughput and 90% fewer IPs

Facing growing complexity and limited visibility, Laposta migrated from hundreds of Postfix instances to KumoMTA,...

AWeber achieved transparent, scalable email delivery and reclaimed control with KumoMTA

AWeber modernized its email infrastructure — gaining transparency, scalability, and full control with KumoMTA.

AhaSend turned email infrastructure into a competitive advantage

Frustrated by ESP limitations, AhaSend’s founders built their own email infrastructure on KumoMTA, turning a persistent...