Built by email veterans for the AI era
Ark is the first transactional email API designed from the ground up for AI agents, coding assistants, and automated workflows.
Why We Built Ark
The email infrastructure market is dominated by legacy providers with outdated technology and pricing that no longer makes sense. After 12 years of working with email at scale—from startups to unicorns—we knew there had to be a better way.
Email is difficult. But with cutting-edge technology and a focus on what actually matters, we built something that matches the quality of established providers like Postmark at a fraction of the cost.
More importantly, we saw where the industry is heading. Vibe coders, solo founders, and AI-powered workflows are growing exponentially. They need email infrastructure that just works—and that's built from the first line of code to be understood by machines, not just humans.
No other provider in the space was built this way. So we built Ark: the AI-first transactional email API for the agentic era.
Leadership
Founder & CEO
Sebastian brings 12 years of hands-on experience with email infrastructure at every scale. He has led growth at unicorns, scaleups, and tech startups across Europe and the US, where transactional email played a critical role in customer communication and retention.
A Stanford-certified entrepreneur with expertise in AI and growth strategy, Sebastian built Ark to solve the problems he encountered repeatedly: legacy email providers with outdated technology, opaque pricing, and no understanding of AI-native workflows.
What Makes Ark Different
AI-Native Architecture
26 MCP tools let AI agents send emails, manage domains, handle bounces, and configure webhooks—all through natural language. No other provider offers this depth of AI integration.
Modern Infrastructure
Built with cutting-edge technology for sub-second delivery, 99.9% deliverability, and 99.99% uptime. No legacy code, no technical debt, no compromises.
Honest Pricing
$19.99/month + $0.50 per 1,000 emails. Same price for everyone. No tiers, no negotiations, no enterprise sales calls. Transparent because we can be.
Company Information
Legal Entity
Jeju Ventures, LLC
Registered in the United States
Headquarters
New York, NY 10016
United States
Founded
2025
Bootstrapped & profitable
Contact
[email protected]
We typically respond within 24 hours
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