relay

Communication & Email

A self-hosted open‑source email API that lets developers send emails via SMTP from their own infrastructure.

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PHP Latest 0.0.44 · 25d ago Security brief →

Features

Self‑hosted deployment with Docker Compose or Swarm
Email sending via a simple REST/JSON API
Detailed logs and SMTP conversation history (30 days)
Multi‑tenancy, project isolation, and queue separation for transactional vs. bulk mail
Built‑in DNS automation, webhooks, observability metrics and dashboards

Recent releases

View all 44 releases →

0.0.44 Bug fix 25d

Notable features

Optional delay for retrying sends

Full changelog

What's Changed

feature: retrying sends with an optional delay by @Nolab0 in https://github.com/hyvor/relay/pull/404
chore: vscode settings by @IshiniAvindya in https://github.com/hyvor/relay/pull/430
fix: concurrent locks fail using postgres advisory locks by @supun-io in https://github.com/hyvor/relay/pull/436

Full Changelog: https://github.com/hyvor/relay/compare/0.0.43...0.0.44

View release on GitHub

0.0.43 Mixed 1mo

⚠ Upgrade required

SMTP sends now forwarded synchronously to the API
TLS auto-renewal enabled for mail
Default read/write timeouts increased

Notable features

DKIM authentication with custom selector and private key
Sends filtering by date
OIDC with organization support

Full changelog

What's Changed

Fix/bug1 by @supun-io in https://github.com/hyvor/relay/pull/380
disable symfony entity resolver by @sakithb in https://github.com/hyvor/relay/pull/386
361 renew mail tls automatically by @Nolab0 in https://github.com/hyvor/relay/pull/383
Sends: filter by date by @Nolab0 in https://github.com/hyvor/relay/pull/378
Remove DB call in /health by @Nolab0 in https://github.com/hyvor/relay/pull/401
Fix send id access before init by @Nolab0 in https://github.com/hyvor/relay/pull/403
Organizations by @sakithb in https://github.com/hyvor/relay/pull/397
increase default read / write timeouts by @supun-io in https://github.com/hyvor/relay/pull/406
docs: system project by @supun-io in https://github.com/hyvor/relay/pull/407
fix: subject in the UI by @supun-io in https://github.com/hyvor/relay/pull/408
fix: enahanced code in SMTP conversation by @supun-io in https://github.com/hyvor/relay/pull/410
fix: sends cursor by @supun-io in https://github.com/hyvor/relay/pull/409
feat: DKIM, custom selector and private key by @supun-io in https://github.com/hyvor/relay/pull/412
forward SMTP sends synchronously to the API by @supun-io in https://github.com/hyvor/relay/pull/414
Less strict DKIM verification by @Nadil-K in https://github.com/hyvor/relay/pull/417
Fixes dkim selector global uniqueness bug by @Nadil-K in https://github.com/hyvor/relay/pull/418
Spellings and grammar check by @IshiniAvindya in https://github.com/hyvor/relay/pull/420
OIDC with organization update by @sakithb in https://github.com/hyvor/relay/pull/421

New Contributors

@sakithb made their first contribution in https://github.com/hyvor/relay/pull/386

Full Changelog: https://github.com/hyvor/relay/compare/0.0.42...0.0.43

View release on GitHub

0.0.42 Bug fix 6mo

## What's Changed * revert ARM build * Caddyfile, setup docs refactor * Minor docs fixes

View release on GitHub

0.0.40 Mixed 6mo

Notable features

ACME client implementation for automated certificate management
Production deployment verification command
Instance domain and web URL configurable from .env

Full changelog

What's Changed

Prod Deploy Docs & Verify Command by @supun-io in https://github.com/hyvor/relay/pull/347
Instance domain and Web URL from .env by @supun-io in https://github.com/hyvor/relay/pull/341
Colors by @supun-io in https://github.com/hyvor/relay/pull/352
ACME Client Implementation by @supun-io in https://github.com/hyvor/relay/pull/343

Full Changelog: https://github.com/hyvor/relay/compare/0.0.39...0.0.40

View release on GitHub

0.0.39 Bug fix 6mo

## What's Changed * SMTP Interface * Docs * added +error.svelte * fix flaky rate limit test

View release on GitHub

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