Nylas Mail

The client is a desktop email application built with Electron, React, and Flux, delivering a web‑based interface that runs n on macOS and Linux. It supports standard mail functions such as viewing, composing, and organizing messages, and its architecture is designed for extensibility through a plugin system that allows third‑party extensions to add new features.

Developers and power users who want to customize their mail workflow can create or install plugins, taking advantage of the open‑source codebase and modular design. The project includes documentation for setting up a development environment, building the application from source, and contributing to its ecosystem.

Although the original maintainer ceased official support in 2017, the repository remains stable and freely available, with several community forks continuing active development. The software is released under an open‑source license and can be used without a paid tier.