Designed for engineers, built for deliverability.
Explore the core architectural components that make Mailzo the fastest, most reliable transactional email platform for modern software.
Asynchronous Queue Pipeline
Fastify 5 ingestion layer dispatches payload metadata to Redis 7.2 & BullMQ within 40ms, returning instant status IDs to client applications.
Easy DKIM & Automated SPF
Instant DNS records generation with 2048-bit DKIM keys and DMARC enforcement. One-click verification through native Node.js DNS promises.
Sandboxed Email Inspector
Inspect HTML templates and raw MIME headers in a dedicated, secure iframe sandbox. Test responsive rendering before production deployments.
Audience & Suppression Sync
Automatic suppression lists for bounces and spam complaints. 1-click unsubscribe handling embedded into every outbound message.
Idempotency Protection
Provide an Idempotency-Key header on critical triggers like purchase receipts to ensure no customer receives a duplicate email.
Dual Delivery Engine
Production-ready AWS SES v2 integration paired with zero-key local SMTP simulation (Mailpit) so local dev teams can ship without credentials.
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