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Ark is the AI first email API. Send transactional emails with native MCP support, sub-second delivery, and 99.9% deliverability.
Browse visual prompt examples, compare model outputs, and open each image to inspect the full prompt behind it. Updated daily with fresh curated prompts.
Ark is the email API built for AI-first developers. Native MCP server with 26 tools lets Claude, Cursor, Windsurf, and Claude Code send emails through natural language — no wrapper code needed. AI-readable docs cut token usage by 10x.
Integrates seamlessly with your stack: Supabase edge functions, n8n workflows, Vercel serverless, or any automation pipeline. SDKs for Python, Node.js, Ruby, and Go. Full SMTP relay for self-hosted tools like Listmonk, Coolify, and Metabase.
99.9% deliverability. Sub-second delivery. Automatic SPF, DKIM, and DMARC. Real-time webhooks for delivery, opens, clicks, and bounces.
Simple pricing: $0.50 per 1,000 emails. No tiers, no enterprise sales calls. Start free with $5 in credits.
Built for developers who ship with AI, automate with code, and don't want to think about email infrastructure.
