Ark: White Label Email API for SaaS

Key Features

• Multi-tenant Architecture

  Provides per-customer domain isolation, where each tenant has their own sending domain, suppression lists, and analytics.

• Automated Authentication

  Supports automated SPF, DKIM, and DMARC setup to assist with email deliverability.

• Guided DNS Onboarding

  Detects a customer's DNS provider and provides steps or automatic configuration to connect domains.

• Per-Tenant Analytics

  Supports tracking of deliveries, opens, clicks, and bounces on a per-customer basis.

• AI Agent Integration

  Provides an MCP server with 26 tools that allow AI agents to manage emails, domains, and deliveries.

Use Cases

• CRM Email Branding

  Supporting users in sending proposals and follow-ups from their own business domains.

• Helpdesk Notifications

  Sending ticket notifications and agent replies from a customer's support domain.

• Invoicing and Billing

  Sending payment reminders and receipts from a customer's billing domain with authentication.

• Scheduling Confirmations

  Supporting booking confirmations and reminders sent from a customer's brand.

Integrations

• Python SDK
• Node.js SDK
• Ruby SDK
• Go SDK
• MCP Server

FAQ

What is a white label email API?

It is a service that allows software platforms to send emails on behalf of their customers using the customers' own verified domains.

How does Ark handle customer domain setup?

Ark provides guided DNS onboarding that detects the customer's DNS provider and helps them configure records for authentication.

Which plan should I choose based on the number of domains?

The Starter plan supports up to 10 domains, Growth supports up to 100, and Scale supports up to 1,000. Custom pricing is available for more than 1,000 domains.