ResendWebhookMsg
Represents a webhook message received from the Resend email service.
This is the top-level envelope containing the event type, timestamp, and event-specific Data. Decode incoming request bodies with decode, which tolerates fields Resend adds later. Only email.* events decode; see decode.
This type models the payload only. It does not verify the Svix signature headers Resend sends (svix-id, svix-timestamp, svix-signature), so a handler that trusts unverified requests will accept forged events; verify the signature before decoding.