Matcha
A beautiful terminal email client built with Go and Bubble Tea. An open source alternative to Superhuman and Outlook for the command line.
Open source alternative to:
Matcha is a feature-rich terminal-based email client that brings a modern email experience to the command line. Built with Go and the Bubble Tea TUI framework, it supports rich content rendering, multiple accounts, PGP encryption, calendar integration, and a plugin marketplace with 35+ community plugins.
What makes Matcha unique is its AI integration — it can be used by autonomous AI agents to send emails via a non-interactive CLI interface, and includes an AI rewrite plugin supporting OpenAI, Ollama, Gemini, and Claude. The plugin system allows anyone to extend functionality, from custom themes to new features.
As a lightweight open source alternative to premium email clients like Superhuman and Microsoft Outlook, Matcha runs entirely in your terminal with no subscription fees. It supports all standard email protocols and can be installed via package managers, Docker, or built from source.
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Repository details
Updated 4/28/2026, 5:00:54 AM
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