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sendthen
Open-source email infrastructure you run yourself
Send transactional email, campaigns, and inbound mail from one self-hosted control plane. Keep your data in one SQLite file, choose SES, SMTP, direct MX, or local sandbox, and use a familiar developer-first API.
Hey Product Hunt 👋
I built sendthen because email APIs have excellent developer experience, but I wanted the control plane—and its data—to live on infrastructure I operate.
sendthen is an MIT-licensed, self-hosted email platform you can run as one container backed by one SQLite file. It covers transactional sending, audiences and broadcasts, inbound mail, visual templates, delivery events, webhooks, tracking, suppressions, and team/API-key management.
The key idea is transport freedom. Your app talks to the same API while you choose how mail leaves: Amazon SES, any SMTP relay, direct-to-MX, or a zero-network sandbox. It also includes a Resend-compatible REST surface plus a TypeScript SDK and CLI.
You can try the hosted version, self-host with Docker, or inspect every line on GitHub.
I’d especially love feedback on:
• Which transport do you use today?
• What would make self-hosting email infrastructure feel trustworthy?
• Where does the API diverge from the developer experience you want?
Thanks for checking it out. I’ll be here throughout launch day to answer questions.
About sendthen on Product Hunt
“Open-source email infrastructure you run yourself”
sendthen was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #111 on the daily leaderboard. Send transactional email, campaigns, and inbound mail from one self-hosted control plane. Keep your data in one SQLite file, choose SES, SMTP, direct MX, or local sandbox, and use a familiar developer-first API.
On the analytics side, sendthen competes within API, Email Marketing, Developer Tools and GitHub — topics that collectively have 689.4k followers on Product Hunt. The dashboard above tracks how sendthen performed against the three products that launched closest to it on the same day.
Who hunted sendthen?
sendthen was hunted by Emre Isik. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of sendthen including community comment highlights and product details, visit the product overview.
Emre Isik