Plunk

Plunk unifies marketing, transactional, and broadcast email under one self-hostable open-source app. AGPL-3.0 license, EU hosting available. Developer-friendly API.

At an early stage the deciding factors are what the free tier actually covers, what the first paid invoice looks like, and how much of a founding engineer's week the setup costs. Feature depth that only matters at a million sends a month is noise until it is not.

Against a waitlist, a launch announcement, onboarding email, and the first transactional sends, Plunk covers every capability this audience leans on: developer experience, scheduling, SDK breadth, and webhook coverage. The deciding factor becomes price and operational preference rather than feature gaps.

• Free tier: 3,000/mo on hosted free plan
• Best published rate per 1,000: Tiers not published in comparable form
• Starts at: $19/mo or self-host
• DX score: 7/10
• Deliverability: Self-hosted depends on your relay. Hosted plan inherits Plunks reputation.
• Operating since: Not published
• Scheduling: Yes
• SDKs: node, python
• Webhooks: Yes

Self-hosted depends on your relay. Hosted plan inherits Plunks reputation.

Indie devs and EU-data teams who want self-hostable unified email.