Build vs Buy

Webhook Infrastructure in 2026

Every team thinks “we'll just add a webhook endpoint.” Then they discover retries, dead-letter queues, signature verification, circuit breakers, and monitoring. Here's the real cost comparison.

What “just send a POST request” actually requires

HTTP POST with configurable timeouts

HMAC-SHA256 signature on every delivery

Exponential backoff with jitter

Dead-letter queue for exhausted retries

Per-endpoint circuit breaker

Idempotency key deduplication

Delivery attempt logging and replay

Rate limiting per tenant

Customer-facing delivery dashboard

Payload transformation engine

Multi-tenant data isolation (RLS)

Monitoring, alerting, and SLO tracking

Building all of this in-house takes 8-12 weeks of senior engineering time. Maintaining it is an ongoing cost.

Component-by-component cost

Component	Build in-house	EmitHQ
Initial build	2-4 weeks engineering time	30 minutes (SDK integration)
Retry logic with backoff	2-3 days to build, ongoing tuning	Configurable, built-in
Dead-letter queue	1-2 days + monitoring setup	Built-in with replay API
HMAC signature signing	1 day + security review	Standard Webhooks spec, automatic
Delivery monitoring	Custom dashboard, 1-2 weeks	Dashboard included
Multi-tenant isolation	1-2 weeks (RLS, per-tenant queues)	Built-in RLS per organization
Circuit breaker	2-3 days + threshold tuning	Auto-disable at failure threshold
Payload transformations	1-2 weeks if needed	No-code JSONPath + templates
On-call for failures	Your team, ongoing	We handle it
Scaling	Redis tuning, worker scaling, queue sharding	Handled — scale tier goes to 10M events/mo

DIY cost

$15,000-$40,000

Engineering time (at $150-200/hr) + ongoing maintenance

EmitHQ

$49/mo

Everything included. Self-host for free if you prefer.

When building in-house makes sense

You have unique delivery requirements that no platform supports (custom protocols, non-HTTP delivery)
Webhooks are a core competency and competitive advantage for your business
You need to operate in an air-gapped environment with no external dependencies
Your volume exceeds 100M events/month and you need custom infrastructure tuning

For everyone else, a managed platform pays for itself in the first week of engineering time saved.

Start free — 100K events/mo

No credit card required. Or self-host the open-source server.