Hosting

Hyvor Relay is a self-hosted, open-source email API for developers. Think of it as an alternative to AWS SES, Mailgun, or SendGrid, but you host it on your own infrastructure.

Self-Hosting is first-class

Hyvor Relay is designed to be self-hosted easily.

• Open Source: Fully open-source codebase available on GitHub. All features are (and will remain) available in the open-source version.
• Minimal Dependencies: Easy docker-based deployments with just PostgreSQL as a dependency.
• Automation: Automatic server registration, IP address configuration, and health checks. In-built DNS server for DNS automation.
• Self-contained: Everything (email workers, bounce SMTP server, webhooks, DNS) is built into a single docker image.
• Dashboards for ease: Web interfaces for admins and users to ease setup and debugging.
• Industry-grade Monitoring: Prometheus, Grafana, Altermanager integrations are built-in for observability.

Get started: Easy Deploy (single server for small to medium sending volumes) or Prod Deploy (multiple servers for large sending volumes).

License

Hyvor Relay is licensed under the AGPL-3.0 License. We also offer enterprise licenses for organizations that require a commercial license or do not wish to comply with the AGPLv3 terms.

See HYVOR's Self-Hosting License FAQ for more information.

Security

DDoS

Layer 7: Hyvor Relay has built-in rate limiting to prevent DDoS attacks at the application layer for the HTTP server.

Layer 3/4: You need to ensure that your server is protected against DDoS attacks at the network layer. This is usually managed by your cloud provider.

Report security issues to security@hyvor.com (PGP Key).