// reference

OpenAPI 3.1 spec.

The full machine-readable spec for every endpoint VoltMail exposes. We generate the SDKs, the docs, and the type definitions from this single file — so it never drifts.

// yaml

openapi.yaml

Human-readable, ~64KB.

// json

openapi.json

For tooling — Stainless, Speakeasy, Kiota.

Preview

openapi.yamlopenapi: 3.1.0
info:
  title: VoltMail API
  version: '2026-05-01'
servers:
  - url: https://api.voltmail.dev
paths:
  /v1/emails:
    post:
      summary: Send email
      …