Postal Systems O, accessible at https://emailengine.app, offers a tool called EmailEngine designed to streamline email management. It acts as an API solution that connects directly to IMAP and SMTP servers, enabling seamless interaction with email services. This facilitates the integration of email functionalities within applications, making it easier for developers to handle email operations programmatically. EmailEngine is designed to enhance efficiency by automating email-related processes and providing robust support for email management tasks.