

NimbusNexus Webhooks is a managed webhook platform that works in both directions: receive and verify events from Stripe, GitHub or any HMAC-signed source, and send your own events to your customers. Every delivery is signed with HMAC SHA-256 and retried with exponential backoff. Events that keep failing go to a dead-letter queue, where you can replay them in bulk. Define event types with JSON Schema, and send one event to many endpoints while paying for it once. A live dashboard shows endpoint health, queue depth and delivery results. Includes scoped API keys, SSO, an audit log, and SDKs for Python, TypeScript and Go. The free plan includes 50,000 events a month.

NimbusNexus Inboxes gives developers and QA teams disposable email addresses for testing sign-up and one-time-code emails, with no shared mailbox needed. The addresses receive real mail, and your tests read it back through an API. One-time codes can be extracted automatically. Every message shows whether it passed SPF, DKIM and DMARC checks. Addresses are random and never reused, HTML is sanitised and rendered in a sandbox, and attachments are listed by name and file hash but never stored. The service only receives mail and cannot send it. There is a free plan, and API access starts at $19 a month.