Reinventing how teams
deliver critical email
Built on a simple conviction: transactional email should be blazing fast,
effortlessly observable, and rock-solid reliable at any scale.
Inbox placement rate
Global edge latency
Uptime SLA guaranteed
Worldwide dispatch hubs
Infrastructure you never have to second-guess
We are committed to making transactional communication foolproof: clean developer APIs, proactive deliverability defenses, and live audit telemetry for every message. Product teams should spend their time delighting users—not firefighting legacy SMTP outages.
Unified transactional and customer lifecycle sending
Start with rock-solid receipts, password resets, and critical alerts. As your product grows, seamlessly unlock dynamic templates, audience segmentation, and automated multi-step sequences inside the exact same workspace—with zero vendor lock-in.
What we stand for
Speed without compromise
Engineered for sub-50ms dispatch worldwide. When a customer requests a login code or purchase receipt, every millisecond counts.
Radical observability
No black boxes. Detailed SMTP-level bounce diagnostics, cryptographic audit logs, and instant real-time event webhooks for complete peace of mind.
Deliverability by design
Proactive domain health checks, real-time list validation, and dynamic multi-provider routing that shields your sender reputation.
Developer empathy
Clean REST APIs, battle-tested client SDKs, and modular React components. We build the tools we always wished existed when scaling email.
Need help or have questions?
Our engineering and deliverability specialists are available to assist with integration architecture, custom SMTP setups, and domain warmup guidance.
Ready to elevate your transactional mail?
Join fast-moving software teams delivering millions of critical emails every month with zero downtime.