RustMailer

RustMailer is a self-hosted, open-source email API platform designed specifically for developers who require full control and privacy over their email infrastructure. Built in Rust, it offers a modern, event-driven middleware that unifies IMAP and SMTP access through REST and gRPC interfaces. RustMailer supports syncing hundreds of email accounts with a single instance, making it highly scalable for complex email workflows. It features programmable filters using VRL, NATS delivery for message streaming, and seamless integration via webhooks. Additionally, RustMailer provides OpenAPI support and a built-in web client, enabling developers to build custom email solutions efficiently. Its self-hosted nature ensures that users maintain ownership of their data, avoiding reliance on third-party email services. This combination of speed, security, and extensibility makes RustMailer an ideal choice for developers looking to implement robust, customizable email infrastructure tailored to their specific needs.