MailKite is an email platform for developers, marketers, and AI agents. Incoming and outgoing email is routed to the optimal provider — Amazon SES, Cloudflare, or Postmark — based on AI routing intelligence that maximizes deliverability and minimizes cost. Built developer and AI-first with full API and MCP server integration, so it is easy to wire into any website, application, or agent. Bring your own domain to send and receive branded email, or start instantly with a free MailKite subdomain. Features inbound email webhooks, transactional send, an MCP server for AI agents, and open-source webmail. Start with 3,000 emails per month free, then scale as you grow. Unlimited domains on every plan.