Side by side

e2a vs Hyvor Relay

Both stand on email apis. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Choose Hyvor Relay if you need a developer-focused email API with self-hosting, automation, and delivery event reporting. Look elsewhere if you need built-in newsletter management or want a project to send both transactional and distributional email.

Visit Hyvor Relay

The facts

	e2a	Hyvor Relay
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	API, Self-hosted, Web	API, Self-hosted, Web
Lowest paid plan	Starter: $10 a month	Cloud Standard: €30 a month
Plans published	5	3
Maker	Not published	Hyvor Relay
Website	e2a.dev	relay.hyvor.com
On email apis	#1 of 31	#2 of 31

e2a: what it does well

Hyvor Relay: what it does well

REST API supports HTML, plain text, attachments, and multiple recipients.
Automates domain setup, suppressions, API keys, and webhooks.
Real-time webhooks report delivery and domain events.
Searchable delivery logs are retained for 30 days.
Self-hosting guide includes Prometheus, Grafana, and Alertmanager integrations.

What to know first

Each project sends transactional or distributional email, not both.
There is no built-in newsletter management.
Authentication requires OIDC; Relay has no own login or signup.
Self-hosting requires PostgreSQL and Docker Compose or Docker Swarm.

Alternatives to e2a Alternatives to Hyvor Relay The whole list