Transactional email infrastructure for software teams. Mailman accepts SendGrid-shaped JSON, queues every recipient durably, and records the delivery path from acceptance to feedback.
Expected, consent-based transactional mail. Unsolicited bulk mail, purchased lists, phishing, and deceptive content are prohibited.
SPF, DKIM, DMARC, aligned bounce handling, TLS transport, and branded HTTPS tracking are provisioned as one sending path.
Per-recipient queueing, bounded retries, delivery events, bounce processing, and webhook attempts are retained for operational review.
Mailman is a Rust service for application-generated receipts, security notices, account messages, and other transactional communication. It is deliberately conservative with new IP capacity: genuine recipient demand—not a quota target—sets the pace.
Each recipient is handled as its own delivery. Reputation controls are isolated by destination provider, and transient SMTP failures are retried without turning permanent failures into repeated traffic.
Mailman is operated by ATTACK Simulator. We investigate abuse reports, delivery anomalies, privacy requests, and security disclosures.