Postfleet

Postfleet provides robust email infrastructure for operational agents, transforming raw, risky email into safe, comprehended data. Key features include: • Inbound email screening for spam, viruses, and malicious content • Automatic prompt injection detection and remediation • Email parsing, classification, and data extraction to defined schemas • Idempotent outbound email with optional human approval • Detailed sanitization reports and security verdicts • Integration via REST API and MCP tools This platform significantly hardens the email attack surface for digital agents. Every incoming message undergoes a rigorous seven-stage pipeline, ensuring verification, authentication (SPF, DKIM, DMARC), cleaning (HTML to text conversion, noise removal), and sanitization of hidden or zero-width characters. Malicious content, spam, and injection risks are quarantined by default, guaranteeing that only pre-processed, safe, and comprehended data reaches your agent. Outbound communications are managed with idempotency and can incorporate human oversight, providing an additional layer of control and accuracy. Attachments are scanned asynchronously at the byte level, enhancing overall security. The platform's comprehensive parsing and extraction capabilities deliver email content as structured JSON, complete with confidence scores and sanitization logs. Postfleet is essential for engineering and operations teams deploying sophisticated digital agents that interact with external email. It mitigates critical security vulnerabilities like prompt injection and ensures agents receive clean, actionable data, reducing operational risk and enhancing communication reliability for tasks like invoice processing, customer service, and data ingestion.