Transactional Email

ZenoMail

Self-Hosted Transactional Email Done Right

Production-ready transactional email platform that gives you complete control over your email infrastructure. Git-like template versioning, GDPR crypto-shredding, multi-tenant support, and zero vendor lock-in. Free forever.

Request Demo Visit ZenoMail.eu
€0
Per Email Cost
1,000
Emails per Batch
0
External Dependencies
ZenoMail Logo
Economics

Enterprise Features. Zero Cost.

Own your email infrastructure. No per-email charges. No subscription fees. No vendor lock-in.

~€50/mo
5M Emails (ZenoMail)
€900+
5M Emails (SendGrid)
100%
Free Forever
GDPR
Compliant by Design
Features

Complete Email Platform

Everything you need for transactional email at scale, with features that respect your data and your autonomy.

Git-like Template Versioning

Draft and production branches, content-addressable storage, full version history, and one-click rollback with live preview.

GDPR Crypto-Shredding

Per-user encryption keys with true data erasure. Delete the key and the data becomes permanently unrecoverable.

Multi-Tenant Architecture

Complete isolation between tenants with per-tenant API keys, providers, templates, and encryption keys.

Batch Sending

Up to 1,000 emails per single API request with individual personalization and per-recipient tracking.

Real-time Webhooks

HMAC-SHA256 signed webhook notifications with automatic retries and delivery status updates.

Built-in SMTP Server

Standard SMTP protocol on ports 587/465 with STARTTLS and template support via custom headers.

Architecture

PostgreSQL-Only Simplicity

No Redis, no RabbitMQ, no external dependencies. Everything runs on PostgreSQL.

Delivery

  • SMTP and Microsoft Graph API providers
  • Automatic failover between providers
  • Rate limiting and bounce suppression
  • Scheduled delivery with RFC3339 timestamps

Templates

  • Handlebars and Liquid template engines
  • Monaco Editor with syntax highlighting
  • Responsive preview (Desktop/Tablet/Mobile)
  • Test email sending before publish

Compliance

  • RFC 8058 List-Unsubscribe headers
  • Full data residency control
  • GDPR/HIPAA/SOC2 capable
  • Complete audit trail

Own Your Email Infrastructure

Email infrastructure that respects your data, your budget, and your autonomy. Self-hosted. Your data, your control.

Request Demo Visit ZenoMail.eu