Email infrastructure for developers
Send transactional and marketing emails reliably at scale with a simple, developer-first API.
99.99%
Uptime SLA
42ms
Median API latency
8.4M
Events processed
curl -X POST https://api.cenvexa.com/v1/emails \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"from": "Cenvexa <hello@yourapp.com>",
"to": "user@company.com",
"subject": "Your login code",
"html": "<p>Code: 842193</p>",
"tags": { "flow": "auth" }
}'{
"id": "email_7K9mQx2b",
"status": "queued",
"latency_ms": 42,
"events_url": "/v1/events/email_7K9mQx2b"
}Email infrastructure shouldn't be this hard
Email infrastructure is complex
SMTP is painful and unreliable
Deliverability is unpredictable
Cenvexa simplifies everything
Simple, intuitive APIs anyone can use
Modern REST API with instant scaling
99.99% uptime SLA with global infrastructure
Why developers choose Cenvexa
100%
Developer-first design
Zero
Hidden costs
$0
Setup fees
24/7
Priority support
The communication layer your app should have shipped with
Cenvexa handles the hard operational parts of email so your team can ship flows, not infrastructure tickets.
One API for the full message lifecycle
Send, observe, retry, and audit every transactional message from a single integration. Cenvexa turns delivery state into product state you can trust.
Send emails in milliseconds
Queue transactional messages from your product path without building SMTP routing, retries, or provider fallbacks.
Know exactly what happened to every email
Trace queued, accepted, deferred, bounced, delivered, opened, and clicked events from one consistent timeline.
React to delivery events in real time
Stream normalized webhooks into your own systems for product notifications, audits, and customer support.
Secure by default
API keys, domain alignment, event signatures, and auditable delivery records are part of the baseline.
Operational visibility
Give engineering, support, and growth teams the same source of truth for every customer-facing message.
API primitives that feel obvious from the first request
Cenvexa exposes communication as a predictable API: send a request, receive a durable message id, then consume normalized delivery events.
curl -X POST https://api.cenvexa.com/v1/emails \
-H "Authorization: Bearer $CENVEXA_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"from": "Acme <updates@acme.dev>",
"to": "jane@company.com",
"subject": "Your workspace invite",
"template": "workspace-invite",
"data": {
"workspace": "Acme",
"invite_url": "https://acme.dev/invite/7K9m"
}
}'Response
202 Accepted{
"id": "email_2vQp9Lk8",
"status": "queued",
"created_at": "2026-05-13T09:42:18.331Z",
"events": [
{ "type": "accepted", "at": "09:42:18.373Z" },
{ "type": "delivered", "at": "09:42:18.419Z" }
]
}What happens next
Three simple steps to begin
Get up and running with Cenvexa in minutes, not days
Create Account
Sign up for free and get instant access to the dashboard
Get API Key
Generate your unique API key from the settings panel
Send First Email
Make your first API call and send an email in seconds
Debug communication issues before customers notice
Live delivery analytics, message timelines, and event logs in one operational view.
Sent today
0
Delivered
0.0%
Bounced
0
Open rate
0.0%
Delivery throughput
Accepted and bounced events by hour
Live event log
tail -fauth@linear.app
Deliveredbilling@acme.dev
Openedinvite@forge.io
Clickednoreply@atlas.so
DeferredStart building with Cenvexa today
Get an API key, verify a domain, and send your first production message without touching SMTP.
Get your API key instantly. Send your first email in seconds.