Building Secure Email Parsing Flow

Worked on a project where security and observability were critical. The goal was to ingest emails from multiple vendors and transform them into a single, unified maintenance-ticket format.

Tools

Postmark: Stream inbound emails to a webhook

Hookdeck: Reliable webhook solution that handles retries, request logging, and data transformation

Google Cloud Storage: Secure storage solution

Google Cloud Vertex AI: Security-compliant enterprise AI solution

Auth & Verification

Postmark→Hookdeck: Basic Auth
Hookdeck→Xano: SHA-256 HMAC header to verify payload integrity
Xano email whitelist to reject unapproved senders
Caches and refreshes Google Cloud token every hour in Xano

Data Flow

Receive & Persist: Receives email --> Postmark --> Hookdeck --> Xano, save Hookdeck event + inbound-email record in Xano
Upload Attachments: DB triggers upload email attachments to GCS
AI Parsing: Invoke Vertex AI (Gemini) to extract data from email content and attachment
Ticket Creation: Save “maintenance ticket” in Xano using the structured JSON output from Gemini

Result

A secure end-to-end pipeline that processes vendor emails into standardized maintenance tickets.

Feel free to reach out if you're looking to build secure AI solutions that can transform your workflow

https://www.onedev.cc/

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