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Plunk

Open-source email platform, EU-hosted cloud or self-host

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Visit useplunk.com ↗

Plunk is an open-source (AGPL-3.0) email platform for transactional, marketing and automated email. The hosted version is EU-hosted and free for 1,000 emails a month.

Key facts

Runs asSelf-hosted
Free planFree software (you pay for hosting and sending)
Paid plans from$0.001 per email after the free 1,000
HostingCloud (EU) or self-hosted
LicenceAGPL-3.0 (open source)

Sources: github.com/useplunk/plunk · useplunk.com/pricing, checked 22 Oct 2026. “Runs as” is from this listing. Blank means we haven't found it in official docs yet, not that it's unsupported.

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