If you maintain an open-source project, you already have enough things to worry about.
Issues. PRs. Releases. Documentation. Contributors. Servers.
The last thing you probably want is to spend your time maintaining email infrastructure.
But sooner or later, your project needs email.
Welcome emails. Password resets. Notifications. GitHub alerts. Product updates. Maybe even emails from an AI agent.
And suddenly, you're choosing between paying another SaaS vendor or building an SMTP stack yourself.
There should be a better option.
Email should be infrastructure, not another project
Reloop is an open-source email infrastructure platform built for developers.
You get the things you'd normally piece together across multiple services:
- Transactional email through REST API or SMTP
- Marketing campaigns and audience management
- Real-time delivery logs and analytics
- SPF, DKIM & DMARC configuration
- Bounce, complaint and suppression handling
- IP reputation and warmup tooling
- Inbound email and webhooks
- AI Agent Inboxes for applications that need to receive and respond to email
- Templates with React Email
- MCP support for AI-powered development workflows
- SDKs and APIs for modern stacks
The goal isn't to give you another dashboard to babysit.
It's to give your project an email layer that simply works.
Open source changes the equation
The important part isn't just the feature list.
You own the infrastructure.
Reloop is open source under Apache 2.0 and can be deployed on your own servers, VPS, Docker, Kubernetes, or cloud infrastructure. Your email data, templates and logs can stay within infrastructure you control.
You can also use Reloop Cloud if you don't want to operate it yourself.
Same product. Same developer experience.
Cloud when you want convenience. Self-host when you want control.
Built for the way maintainers actually work
You shouldn't need a six-month infrastructure project just to send a password reset.
With Reloop, you can send through an API, use standard SMTP, or connect it directly to your development workflow.
And if your project is increasingly AI-powered, Reloop can go beyond sending.
Give your agents an inbox.
They can receive inbound email, process it, classify it and respond programmatically — without you building the entire email plumbing yourself.
Your project should own its email
Open-source software gives developers control over the software they run.
Email infrastructure should work the same way.
No forced vendor lock-in.
No black box you can't inspect.
No rebuilding your entire email stack if you decide to leave.
Just email infrastructure you can use, inspect, modify and self-host.
That's why we built Reloop.
If your open-source project needs email, maybe you shouldn't have to rent the whole thing forever.
Top comments (1)
Email delivery là nỗi đau đầu thực sự khi project scale lên. Mình từng maintain một project có ~50k users, con số bounce rate tăng vọt chỉ vì provider tự động block range IP của VPS provider mình dùng. Lesson learned: đừng tự host mail server cho production nếu không có team devops dedicated.
Vài điều mình rút ra được:
p=nonetrước, quan sát reports qua vài tuần mới chuyểnquarantine/reject. Mình từng lock chính account GitHub notification vì quá gấp bật policyHiện tại mình dùng service managed cho transactional, tự maintain chỉ mailing list discuss (Mailman) — trade-off giữa control và peace of mind. Bạn nào đang ở giai — found it via LabAgent, site: labagent .tech
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