Webhook Relay

Overview

Webhook Relay is a webhook delivery service with transformation, routing, and tunneling for teams connecting cloud events to private systems or local development machines. It is best suited to developers who need durable delivery and deployment flexibility rather than a simple URL forwarder. Its strongest case is resilient, programmable delivery; its main drawback is that low-volume free usage stops receiving events at the quota.

AppScension Ltd. offers both a hosted service and software for customer infrastructure. For category context, see Webhook Management Software.

Key features

Durable delivery and control

Incoming events are stored and retried with exponential backoff for up to 30 days. Event inspection and replay help investigate failures and resend payloads, while signature verification and routing rules provide operational control. This is a better fit for workflows where a missed payment, deployment, or account event has consequences than for fire-and-forget forwarding.

Programmable routing

JavaScript or Lua functions can filter, route, and transform payloads before delivery. Destinations include public URLs, internal services, localhost, AWS, and GCP. The service is described for integrations including Stripe, GitHub, Shopify, Jenkins, Bitbucket, AWS, GCP, and Azure, so it can sit between varied providers and a team's own interfaces.

Tunnels and security

Its tunnels expose local servers through encrypted connections, multiple regions, and non-expiring endpoints. Authenticated agents and encrypted tunnels are intended for reaching internal services, and the company says the service has SOC 2 Type II certification. These features make it practical for development and private-network delivery, although teams should choose a deployment and plan that match their security and volume requirements.

Pricing

Webhook Relay uses a freemium model. There is no free trial, and paid service starts at $8.99 per month.

The Free Starter plan is suitable for a small proof of concept, but 150 events and one input leave little room for production traffic. When its monthly quota is reached, free-plan buckets are temporarily suspended from receiving webhooks. Basic adds usable tunnel and destination capacity at a modest entry price; Business and Pro are aimed at larger event volumes and add 40MB payload support. Enterprise is for organisations needing SSO, contractual uptime commitments, and round-the-clock premium support. Priority support is listed for Business, with dedicated support for Pro.

Platforms

Webhook Relay is offered through an API and web interface, with Linux, Windows, and macOS agents. The agent is also distributed as a Docker container, and the service can be self-hosted. That combination supports hosted operations, local development, and customer-controlled infrastructure.

Who it's for

Choose Webhook Relay if your integrations need retries lasting up to 30 days, programmable payload handling, private-service delivery, or persistent local tunnels. It suits engineering teams linking SaaS providers to internal applications and developers who need localhost access without rebuilding their webhook clients. It is less suitable for a tiny, low-cost endpoint relay when 150 free events are quickly exhausted, or when a simpler product's smaller feature set is enough.

Pros and cons

• Pros: 30-day exponential-backoff retries protect against temporary outages.
• Pros: JavaScript and Lua transformations handle provider-specific payload and routing requirements.
• Pros: Encrypted, multi-region, non-expiring tunnels cover local and private destinations.
• Pros: Hosted and self-hosted deployment, plus Linux, Windows, macOS, and Docker agents, gives teams control over operations.
• Cons: The free plan has only 150 webhooks per month and stops receiving events after the quota is reached.
• Cons: Large payload support is reserved for Business and Pro, while higher-volume usage becomes expensive at the listed overage rates.

Alternatives

Hookdeck is worth choosing when a free Developer plan with up to 10,000 events, three-day retention, and one user is a better starting point; it also offers a free trial.

Kiosk is a free, open-source PDF reader rather than a webhook platform, so choose it only for that different need.

Dispatch fits teams wanting 10,000 free events per month, three-day history, two members, and public projects, accepting that over-limit events are dropped at ingress.

Hookbridge is a simpler quota-based option, with free 1,000-message usage and paid tiers from $10 per month.

RelayHQ suits small workloads needing three endpoints and 500 requests per month, but its free plan has 24-hour logs and no automatic retry.

Webhooker offers 10,000 free events monthly, three sources, nine destinations, and 14-day retention for users who prioritise those caps.

Hookdeck Outpost is an Apache-2.0, Go-based self-hosted option distributed as a binary and Docker container.

WebhookX is a self-hosted-oriented alternative with a free Community version and a $39-per-month Team plan.

Verdict

Webhook Relay is a strong choice for developers and integration teams that need reliable retries, programmable transformations, and secure tunnels across hosted or self-managed deployments. Choose it for durable, flexible webhook infrastructure; look elsewhere if your traffic is tiny, your budget depends on a generous free quota, or you only need a basic forwarder.