


Mails.ai is a transactional email API for developers and AI agents. It handles the everyday emails that apps and automated agents need to send and receive, like sign-in codes, receipts, order confirmations, notifications, and password resets, and it captures the replies as clean, structured data your app can act on. It is built for transactional, permission-based email: the messages a recipient asked for or expects. It is not a cold-email, bulk, or marketing tool. Emails are properly authenticated with deliverability handled for you, and incoming mail is checked for security threats before it reaches an AI agent. Developers connect in a few lines of code and can give an AI agent its own working email address in minutes.