The email API,
built for proof.
Transactional email with signed proof of delivery on every message. EEA-hosted, GDPR-oriented, no puzzles.
// signed proof on every send await apex.messages.create({ from: 'hello@yourcompany.com', to: 'customer@example.com', proof: true }); → 202 accepted · proof 0x41f2 → delivered ✓ 1.8s · eeu
Everything you need to send email.
Pure engineering, no fluff.
Built for developers who require high-precision email infrastructure with deterministic outcomes.
Lightning Fast API
Enterprise SLA targets 500ms P95 API responses at the gateway, with the same production API path available from the first send.
Enterprise Security
AES-256 encryption at rest, TLS 1.2+ required for API/SMTP, TLS 1.3 preferred where supported. DKIM, SPF, DMARC, DANE, and MTA-STS built in.
Delivery Tracking
Track every email from send to delivery. Opens, clicks, bounces, and complaints in real time.
Delivery Analytics
Opens, clicks, bounces, and complaints feed analytics and webhooks, with Enterprise webhook delivery targets measured at P95.
Email Deliverability Grader
Deterministic letter grade for your DNS, authentication, content, and reputation.
Simple pricing
Pricing →Ready to Ship
Better Email?
Start on the free tier and grow into the same API — no migration, no renegotiation, no surprise overage rates.