Show HN: Outpost – OSS infra for outbound webhooks and event destinations

Hey HN, we're launching Outpost, an open-source, self-hostable component designed to handle outbound event delivery for SaaS/API platforms. If you're building a platform, you eventually need to send events to your users (think payment success, resource updates, workflow changes). Implementing this reliably—handling retries, monitoring, scaling, providing a decent dev experience for consumers, and managing tenants—becomes a significant, recurring engineering task that distracts from core product development. We built Outpost to offload that complexity. Outpost delivers events via traditional webhooks and also directly to event destinations like message queues and buses. While webhooks are ubiquitous, they have limitations at scale regarding cost, reliability patterns, and security posture. We observed platforms like Stripe, Shopify, and Twilio offering direct bus/queue integrations for these reasons—it's often cheaper and more resilient. It offers a better DX fo