Haraka
self-hosted, mail agents

Haraka is a high-performance SMTP server written in JavaScript, designed to be highly extensible through plugins. It offers excellent scalability and flexibility, making it suitable for handling large volumes of email traffic in various environments. Haraka's architecture allows developers to easily customize and extend its functionality by adding or modifying plugins to suit specific requirements. With its focus on performance and versatility, Haraka is a popular choice for organizations and developers seeking a reliable solution for SMTP services.

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