Developer API & SMTP Relay Documentation

Engineered for Developers

Integrate sub-15ms transactional email dispatch, webhook event streams, and zero-knowledge encryption into your apps with a few lines of code.

curl -X POST https://api.nexudo.com/v1/messages \
  -H "Authorization: Bearer nex_live_89f2b34c" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "[email protected]",
    "to": ["[email protected]"],
    "subject": "Q4 Infrastructure Scaling Sync",
    "html": "<p>High-concurrency email dispatch complete.</p>"
  }'