compare
Hyvor Relay vs Plunk
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Hyvor Relay | Plunk |
|---|---|---|
| Language | PHP | TypeScript |
| Licence | AGPL-3.0 | AGPL-3.0 |
| Stars | 911 | 5.5k |
| Latest | 0.0.46 | v0.15.0 |
| Last push | 2026-09-30 | 2026-10-06 |
| Release cadence | about 26 days between releases | about 37 days between releases |
| Active contributors | 4 commit authors on the default branch in the last 90 days | 12 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace SendGrid. Alternatives to SendGrid →
PartialHyvor RelayTransactional sending over an HTTP API and SMTP with bounce handling and webhooks; no marketing campaigns.
PartialPlunkTransactional email over an HTTP API next to campaigns and automations, sent through Amazon SES.
Hyvor Relay
- 0.0.462026-08-10feat: arm docker build
- 0.0.452026-06-04fix: accepted and bounced state on DATACLOSE failure
- 0.0.442026-05-09feature: retrying sends with an optional delay
- 0.0.432026-04-13Fix/bug1
- 0.0.43-beta.82026-03-23⚠️ THIS IS A CLOUD-ONLY RELEASEpre-release
Plunk
- v0.15.02026-09-20Add ability to snooze contacts instead of unsubscribing (787d200)
- v0.14.02026-08-17Add additional card verification in worker (33cc815)
- v0.13.02026-08-09add email body cleanup job to remove old email content after 90 days (cef8ce0)
- v0.12.02026-06-22add composite index on campaignId and status for efficient campaign completion checks (4b752a5), closes #400
- v0.11.02026-05-13Ability to change subscription status in workflows (fadc19d)
Hyvor Relay
✓ signed The latest release, 0.0.46, carries a signature GitHub verified.
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Plunk
✓ signed The latest release, v0.15.0, carries a signature GitHub verified.
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