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The original was posted on /r/opensource by /u/helbette on 2025-02-24 21:57:08+00:00.
I’ve built a lightweight email verification service that you can self-host for pennies. I open-sourced it after getting frustrated with expensive SaaS solutions. Built to support solopreneurs and the open source community.
Tech stack:
• Go 1.21+
• Redis (only for domain caching, no email storage)
• Prometheus metrics
• Grafana monitoring
• Docker & Docker Compose ready
Features:
• No data leaves your server
• No tracking/analytics
• Completely self-contained
• Super lightweight (runs great on minimal resources)
• All core features included:
-
MX record verification
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Disposable email detection
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Domain verification
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Typo suggestions
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Batch processing
Deployment:
• Ready to deploy on fly.io
• Docker compose included
• Clear documentation
• Minimal dependencies
GitHub:
Landing page:
I’m a dev who can’t do any effective announcements, so I thought this community would be a good starting point and also you folks might appreciate knowing this exists. Perfect for anyone running their own registration systems or needing email validation without depending on external services.