Email without a third-party SaaS
The client needed a dedicated backend for transactional email (account notifications, order confirmations and system alerts) that its existing applications could call. Delivery had to be secure, reliable and consistent, without depending on a third-party email SaaS platform.
One small service
We built a lightweight Spring Boot service that does one job. Applications trigger emails through its REST API, Spring Security protects the endpoints, and Spring Mail delivers over SMTP. Keeping email logic in one place makes it centralised and auditable.
The client now runs its own email service, integrated with its applications. Routing all mail through it has improved deliverability tracking and simplified template management.