twilio-email Purpose Enable OpenClaw to implement, operate, and troubleshoot SendGrid (Twilio) transactional email in production: - Send transactional emails via SendGrid v3 API with correct auth, retries, idempotency, and observability. - Use Dynamic Templates (Handlebars) safely (escaping, conditionals, loops), versioning templates, and rolling out changes. - Process SendGrid Event Webhook (delivered/open/click/bounce/spamreport/dropped/deferred) with signature verification and replay protection. - Manage suppressions (bounces, blocks, spam reports, unsubscribes) and implement list-unsubscr…