Plunk
Open-source email for SaaS: transactional sends, campaigns and automations
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About Plunk
Plunk is an open-source email platform for SaaS companies that want transactional messages, marketing campaigns and broadcasts handled by one service. Developers send product emails through its API, while the same contact list feeds newsletters and automated sequences triggered by user events. Pricing is usage-based at $0.001 per email with no cap on contacts, and the whole platform can be self-hosted by teams that prefer to run their own email infrastructure. It began as a solo founder's answer to costly email automation tools and grew on early feedback from Hacker News.
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