Hyvor Relay vs Postmark
Hyvor Relay
relay.hyvor.com
Postmark
postmarkapp.comSide by side
| Figure | Hyvor Relay | Postmark |
|---|---|---|
| Price from | €30/mo | $5/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 3 | 8 |
| Spec score · Transactional Email Software | 8.7 (#6) | 8.7 (#7) |
| Spec score · Email APIs | 8.6 (#5) | 8.6 (#6) |
| Spec score · Transactional email services | 8.5 (#14) | 9.2 (#1) |
| 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. |
Plans
Hyvor Relay
- Enterprise License€10,000 a year
- Cloud Standard€30 a month
- Self-Hosted Open-SourceFree
Postmark
- 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
- Dedicated IP$50 a month
- High-volume plansPriced on request
In their own words
Hyvor Relay
Hyvor Relay has no write-up on Specifiction yet; its figures are above.
Postmark
Postmark delivers and tracks application email as an alternative to SMTP or Sendmail. It separates transactional and broadcast messages into different Message Streams and IP infrastructure. Developers can send through REST API, SMTP, or multi-region SMTP routing, with official libraries for Node.js, Python, Rails, Ruby, PHP, and.NET. Inbound messages can be converted to JSON and sent to a webhook URL. Tracking includes delivery, bounces, spam, opens, and links, with event webhooks. Editable responsive templates cover transactional messages such as password resets, receipts, and invitations. The free Developer plan costs nothing, provides 100 emails per month, permits no overages, and does not expire. Basic starts at $15 a month for 10,000 emails per month; extra emails cost $1.80 per 1,000 and are calculated at the end of the billing cycle. Unused emails do not roll over. Postmark lists API and web access. Its iOS app was sunset in June 2025 and is no longer supported.