Webhook Signature Verification in Laravel
Verify webhook signatures against the raw request body using HMAC, constant-time compare, timestamp tolerance, and replay protection.
SendPromptly Team
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8 min read
Verify webhook signatures against the raw request body using HMAC, constant-time compare, timestamp tolerance, and replay protection.
What you can send, what proof to store, and how to handle unsubscribes/suppression.
A practical checklist for launching SendPromptly in production.