Hyvor Relay review (2026): is the free plan enough?
Open-source email API you can self-host
Black Friday: is there a Hyvor Relay sale?
Hyvor Relay report card
Weak · out of 4.0 · graded Nov 13, 2026
Best for self-hosted open-source email sending
Hyvor Relay is an open-source email API you run on your own servers, free under AGPL-3.0. A hosted cloud plan is only a waitlist with an estimate of €30 a month, so for now you either run servers and deal with delivery yourself or pay from €10,000 a year.
Who Hyvor Relay is for
- Fits if you can run your own mail servers and want no per-email fee
- Works for teams that need the open-source license for compliance
Who Hyvor Relay is not for
- Skip it if you do not run servers, as self-hosting leaves deliverability to you
- Watch out: the hosted cloud plan is a waitlist and its €30 a month is an estimate, not final
- Pricey if you need to avoid the AGPL-3.0, since the Enterprise License starts at €10,000 a year
- Tight if you need long logs, with delivery logs kept for 30 days
Why Hyvor Relay gets a 1.8
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for moneyFree only if you host it yourself, which needs servers and IPs, so it sits in the middle. The Enterprise License starts at €10,000 a year, and the cloud plan is an unconfirmed estimate.
- CFree plan and trialThe open-source edition is free with unlimited usage, but you must run it yourself, and there is no hosted free tier.
- CFeaturesEmail API, DKIM domains, webhooks, bounce and complaint handling, projects and observability. Delivery logs last 30 days.
- DEase of useNo rating on record. Self-hosting means servers, DNS, IP reputation and deliverability are yours to run.
- CPlatforms and integrationsWeb interface and API, with Prometheus, Grafana and Docker Swarm hooks. No apps.
What these grades rest on. Graded from this listing, whose facts were read from Hyvor's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/hyvor-relay#review"><img src="https://toolgpa.com/badge/hyvor-relay.svg" alt="Hyvor Relay: 1.8 GPA on ToolGPA" width="196" height="56"></a>Where Hyvor Relay stands among email sending services
Hyvor Relay's GPA of 1.8 is higher than 4 of the 50 other email sending services we grade, and level with 4.
It stands best on free plan and trial (C, above 11 of 50) and worst on ease of use (D, above 0).
Its paid plans start at about $931 a month, against a middle price of $15 for the category: 41 of the 41 others that charge start lower.
On features, ease of use and platforms it scores 1.7 out of 4. 41 tools score higher and cost less.
Each grade against the category
Every bar is all 51 email sending services we grade, cut by the letter each got. Hyvor Relay’s own letter is outlined.
- CValue for moneyAbove 8 of 50, level with 16
- CFree plan and trialAbove 11 of 50, level with 23
- CFeaturesAbove 0 of 50, level with 29
- DEase of useAbove 0 of 50, level with 6
- CPlatforms and integrationsAbove 0 of 50, level with 16
Price against what you get
Each dot is one of 44 email sending services. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Hyvor Relay, or make your own?
Keep it
To replace Hyvor Relay you would be making mail servers with a good name among inbox providers. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 42 of the 50 other email sending services grade higher. It costs $11,172 a year. Hyvor Relay is open source, so there is a third way: take its code and run it yourself.
What you could not
- Mail servers with a good name among inbox providers.
- It plugs into other products, Prometheus, Grafana and Docker Swarm among them, and has an API.
What this rests on. Hyvor Relay’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Hyvor Relay?
Hyvor Relay is an open-source email API under the AGPL-3.0 license. It offers a REST API with idempotent sends, domain and DKIM management, webhooks, suppression handling and 30 days of delivery logs. It is self-hosted today, with a managed cloud version listed as a waitlist.
Worth knowing
- The cloud plan is on a waitlist, listed at an estimated €30 per month for 300,000 emails and not yet final.
- Self-hosting means running servers, IPs and deliverability yourself.
- Delivery logs are kept for 30 days.
- The page states the Enterprise License starts at €10,000 a year and is priced by volume.
Key features
- Email API
- A REST API with idempotent sends, HTML and plain text, attachments, custom headers and multiple recipients.
- Domains and DKIM
- Multiple sending domains with enforced DKIM signing and an in-built DNS server.
- Webhooks
- Event webhooks for deliveries, bounces and domain verification.
- Bounce and complaint handling
- Bounces, complaints and suppressions are managed automatically.
- Projects
- Isolated projects each with their own domains, keys and webhooks.
- Observability
- Prometheus and Grafana integrations and health checks for servers, DNS and IP reputation.
Hyvor Relay pricing
As of Nov 13, 2026, Hyvor Relay has a free plan, and paid plans start at €10,000 per year and up (Enterprise License).
- Starts at
- €10,000 per year and up (Enterprise License)
- Free plan
- Self-hosted open-source edition: free with unlimited usage under AGPL-3.0 and community support.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Self-Hosted Open-Source | $0 | You host it yourself under AGPL-3.0, with all features and community support. |
| Enterprise License | €10,000per year and up | The same features without AGPL-3.0 obligations, with volume-based pricing, enterprise support and SLA options. |
Read from relay.hyvor.com on Nov 13, 2026. Prices change, so confirm with Hyvor Relay before you buy.
Works with
- Prometheus
- Grafana
- Docker Swarm
Hyvor Relay alternatives
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- Hyvor Relay vs Amazon SES
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Common questions
Does Hyvor Relay have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Hyvor Relay is listed for Web.
Does Hyvor Relay have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Hyvor Relay is listed for Web.
Is Hyvor Relay open source?
Yes. Hyvor Relay is open source, according to its own site. It can also be run on a server of your own.
Does Hyvor Relay have an API?
Yes. Hyvor Relay offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.