HMAC
Hash-based Message Authentication Code
Symmetric signature scheme. Every VoltMail webhook delivery carries an X-VoltMail-Signature header containing an HMAC-SHA256 over (timestamp + body). Verify it before trusting the payload.
Hash-based Message Authentication Code
Symmetric signature scheme. Every VoltMail webhook delivery carries an X-VoltMail-Signature header containing an HMAC-SHA256 over (timestamp + body). Verify it before trusting the payload.