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Unified API for Domains, DNS & Contacts. One key, that manages it all.

DNS on managed nameservers, email forwarding, and domain health over REST, with Gmail, Outlook, IMAP, and calendars on the same key.

Get your free API keySee the docs

Every domain, record, and mailbox, in one dashboard.

Product dashboard

Everything you need to run domains, route mail & ship

Domain and DNS infrastructure first, with mailbox and calendar connectivity on the same API. Predictable REST endpoints, consistent JSON responses, and one request shape that works across every provider.

DNS Management

Records, nameservers, and propagation, managed like your own database.

  • A, AAAA, CNAME, MX & TXT records
  • Managed nameservers
  • Delegation checks built in
POST/api/v1/dns/records

Creates the record on the domain's zone and returns it, live on our nameservers within minutes.

Request
{
  "domain": "company.com",
  "type": "MX",
  "name": "@",
  "value": "mx1.company.com",
  "priority": 10,
  "ttl": 300
}
Response200 OK
{
  "id": "856390662",
  "type": "MX",
  "name": "@",
  "value": "mx1.company.com",
  "ttl": 300,
  "priority": 10
}

Domain Connect

Point a domain at us once, control its DNS forever.

  • Existing records imported automatically
  • Pending to active delegation checks
  • Managed from dashboard or API
POST/api/v1/dns/domains

Registers the domain's zone on our nameservers and imports its existing records, so switching over breaks nothing.

Request
{
  "domain": "company.com"
}
Response200 OK
{
  "domain": "company.com",
  "status": "pending",
  "nameservers": [
    "ns1.reinterfacens.com",
    "ns2.reinterfacens.com",
    "ns3.reinterfacens.com"
  ],
  "imported_records": [
    { "type": "A", "name": "@", "value": "203.0.113.10", "ttl": 3600 }
  ]
}

Hosted OAuth

Hosted auth for Google and Microsoft. Encrypted tokens. Zero boilerplate.

  • Encrypted token storage
  • Automatic refresh handling
  • Per-tenant isolation
POST/api/v1/google/connect

Returns a Google consent URL. Redirect your user there to link their mailbox — you never handle their password.

Request
{
  "email": "founder@company.com"
}
Response200 OK
{
  "authUrl": "https://accounts.google.com/o/oauth2/v2/auth?…",
  "email": "founder@company.com"
}

Calendar API

Read and write calendar events like they're your own database.

  • Read, create, and manage events
  • Uses connected account tokens
  • Target any calendar via calendar_id
POST/api/v1/calendar/events

Creates the event on the connected Google Calendar and returns it, link included.

Request
{
  "summary": "Quarterly sync",
  "start": "2026-07-08T10:00:00Z",
  "end": "2026-07-08T10:30:00Z"
}
Response200 OK
{
  "id": "evt_92aa",
  "summary": "Quarterly sync",
  "status": "confirmed",
  "htmlLink": "https://calendar.google.com/event?eid=…"
}

Email Sending

One POST sends from any connected mailbox.

  • Gmail, Outlook & SMTP, one endpoint
  • Provider-native delivery
  • Send and fetch logs in the dashboard
POST/api/v1/send

Sends through the connected account's own provider — Gmail API, Microsoft Graph, or SMTP — and returns the provider's message id.

Request
{
  "from": "founder@company.com",
  "to": "customer@example.com",
  "subject": "Welcome",
  "html": "<p>Your account is ready.</p>"
}
Response200 OK
{
  "success": true,
  "data": {
    "messageId": "<a1b2c3@mail.company.com>",
    "accepted": ["customer@example.com"],
    "rejected": null
  }
}

Designed for developers

The API you wish every provider shipped with. No SDK sprawl, no provider-specific quirks.

api.reinterface.com
// Request
POST /api/v1/send

{
  "from": "founder@company.com",
  "to": "customer@example.com",
  "subject": "Welcome",
  "html": "<p>Your account is ready.</p>"
}

// Response
{
  "success": true,
  "data": {
    "messageId": "<a1b2c3@mail.company.com>",
    "accepted": ["customer@example.com"],
    "rejected": null
  }
}

Simple REST API

Predictable endpoints with consistent JSON responses.

Personal API keys

One key from your dashboard authenticates every endpoint.

Every provider, one shape

Gmail, Outlook, and IMAP/SMTP behind the same request.

Plain REST + JSON · works from any language

API reference

Security isn’t a feature. It’s the foundation.

Your keys never touch a browser — every credential and payload is protected end to end.

Encrypted token storage
OAuth tokens encrypted at rest with per-tenant isolation.
API key rotation
Regenerate your key from the dashboard; the old one stops working instantly.
Least-privilege OAuth scopes
Request only the OAuth scopes your product actually needs.
No stored message bodies
Email bodies and attachments are never stored, only the headers you request.

Questions, answered straight.

What the API does, which mailboxes it reaches, and what’s honestly still ahead — no hedging.

One REST API. Connect a mailbox by OAuth or by credentials, then move mail — POST /send to send, POST /fetch to pull. Calendar and DNS use the same API and the same keys. No SDK; the same request shape works from any language that can make an HTTP call.