Hyvor Relay
6.9#7 in email apisFrom €30 a monthFree planWebAPISelf-hosted
VisitHyvor Relay vs Postmark
What both publish
| Fact | Hyvor Relay | Postmark |
|---|---|---|
| Email types | The getting-started guide says each project sends either transactional or distributional email, using separate IP pools to maintain reputation separately. | Postmark separates transactional and broadcast email into different Message Streams and IP infrastructure. |
| Free plan | Yes | Yes |
| Integrations | The self-hosting guide lists built-in Prometheus, Grafana, and Alertmanager integrations for monitoring and observability. | Official integrations include Slack, Zapier, Stripe, WordPress, Supabase, Bubble, Craft CMS, Netlify, and Gravity Forms. |
| Monthly send limit | 300000 | 10000 |
| Security | The hosting documentation says its HTTP server has built-in application-layer rate limiting and recommends cloud-provider DDoS protection for network-layer attacks. | Postmark supports TLS and HTTPS, DKIM, SPF, DMARC, two-factor authentication, API permission controls, penetration testing, and DDoS protection. |
Hyvor Relay plans
- Enterprise License€10,000 a year
- Cloud Standard€30 a month
- Self-Hosted Open-SourceFree
Postmark plans
- FreeFree
- Basic$15 a month
- Pro$16.50 a month
- Platform$18 a month
- Custom activity retention$5 a month
- DMARC monitoring$14 a month
Pick Hyvor Relay if…
It suits developers who need an email API and want a hosted or self-hosted deployment. Teams needing newsletter management should note that it has no built-in newsletter features.
Pick Postmark if…
Postmark suits developers who need to send application email through an API or SMTP and track delivery events. Its inbound processing and message streams also suit services handling both incoming and different types of outgoing email.