Postal Systems
Email integration software and developer tools for teams building applications that send or read email
Highlights
- New on EvolcAdded 2026-10-27
About Postal Systems
Postal Systems builds email software for developers. Its flagship product, EmailEngine, is a self-hosted API that connects IMAP and SMTP accounts to REST endpoints and real-time webhooks; it also offers Ethereal Email for testing outgoing messages.
The company sells subscriptions for its applications, including annual EmailEngine subscriptions, and offers custom licensing terms. Its products are aimed at developers and teams building CRMs, help desks, AI agents and other applications that handle email.
Postal Systems OÜ is based in Tallinn, Estonia, and was founded in 2020.
Product: EmailEngine, a self-hosted email API and integration platform, and Ethereal Email, a fake SMTP and IMAP service for testing.
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