How do you handle lost webhooks in production?

I've worked at several companies where we'd discover hours later that critical webhooks from Stripe/Shopify never arrived (deployment, timeout, bug, etc.).

Every team ended up building the same solution: retry logic, dead letter queue, monitoring.

Curious how others handle this: - Do you rely on the provider's retry policy? - Built your own reliability layer? - Use a service? - Just manually reconcile when it happens?

(Context: Building https://relaehook.com to solve this, but genuinely curious what the norm is)