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API reference

Interactive reference. Browse and try every endpoint in the interactive API reference. It is generated directly from the API, so it is always in sync. The machine-readable OpenAPI 3 spec lives at mailhuset.com/openapi.json.

The page below is a hand-written overview. The Mailhuset REST API has base URL https://api.mailhuset.com/v1. All requests are authenticated with a Bearer API key and send/return JSON.

Authorization: Bearer $MAILHUSET_API_KEY
Content-Type: application/json

Send email

`POST /v1/email`: send a message. Full field list in Send email via the API.

POST /v1/email
{ "from": "Acme <hello@yourdomain.com>", "to": ["a@example.com"], "subject": "Hi", "html": "<p>Hello</p>" }

Messages (activity)

`GET /v1/email`: list recent messages with their status and events, for building your own activity view or reconciling sends.

Domains

Method	Path	Purpose
`POST`	`/v1/domains`	Add a sending domain
`GET`	`/v1/domains`	List domains and their status
`GET`	`/v1/domains/{domain}`	Get one domain + its DNS records
`POST`	`/v1/domains/{domain}/verify`	Re-check DNS and verify

See Verify a sending domain.

Webhook endpoints

Method	Path	Purpose
`POST`	`/v1/webhook-endpoints`	Register an endpoint
`GET`	`/v1/webhook-endpoints`	List endpoints

Event types are listed in Webhooks.

Conventions

Versioning: the path is versioned (/v1). New breaking shapes get a new

version; additive fields don't.

Errors: standard HTTP status codes: 401 (auth), 403 (not permitted /

domain not verified), 422 (validation, with the offending field), 429 (rate limited). Bodies include a message.

Idempotency: pass idempotencyKey on sends so retries don't double-send.

Import the spec

The OpenAPI document at mailhuset.com/openapi.json can be imported straight into your tools:

Postman / Insomnia: import by URL to get a ready-made request collection.
Client generation: feed it to openapi-generator to scaffold a client in

your language.

openapi-generator-cli generate \
  -i https://mailhuset.com/openapi.json \
  -g typescript-fetch -o ./mailhuset-client

Libraries

Prefer a typed client? Use the Node & Python SDKs instead of raw HTTP.

Need help? Email support@mailhuset.com.