Quickstart
Send your first email in 5 minutes
Architecture
How Platform, Tenant, and Domain hierarchy works
API Reference
Explore all endpoints with interactive examples
Built for Platforms
White-Label by Design
Every customer gets their own domains, credentials, webhooks, suppressions, and usage tracking. Fully scoped per tenant.
Guided Domain Onboarding
Walk your customers through DNS setup with verification polling, actionable error messages, and automatic DKIM/SPF/DMARC configuration.
High Deliverability
Per-tenant , , and authentication. Each customer sends from their own verified domain.
Send Email in Any Language
- Python
- Node.js
- Ruby
- Go
- cURL
AI-Native
Ark ships a server with 26 tools. Your AI agent can send emails, check deliveries, manage domains, and handle bounces without custom integration code.MCP Setup Guide
Connect Claude, Cursor, Windsurf, or any MCP client to the full Ark API
Get Started
Get your API key
Create an account at arkhq.io and generate an API key from your dashboard.
Set up your domain
Add your sending domain and configure , , and records.
Domain Setup Guide
Step-by-step DNS configuration with provider-specific instructions
Send your first email
Follow the quickstart to send a test email in under 5 minutes.
Quickstart
From zero to sent in 5 minutes
Scale to production
Create tenants for your customers, onboard their domains, and set up webhooks for delivery tracking.
White-Label Architecture
Learn how the Platform, Tenant, Domain hierarchy works