Foundry376/Mailspring
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
⚡ Executive Summary & Quick Facts
Authoritative SourceMailspring is Mailspring is an open-source project written in TypeScript: :love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), Foundry376/Mailspring has accumulated 18,003 GitHub stars and 1,066 forks. It is written in TypeScript, licensed under GPL-3.0, and ranks #941 globally. It is actively maintained with the latest commit recorded on Nov 11, 2026.”
| Repository | Foundry376/Mailspring ↗ |
|---|---|
| Primary Category | electron |
| Language & Stack | TypeScript |
| Software License | GPL-3.0 |
| Community Traction | ★ 18K stars · ⑂ 1.1K forks · #941 globally |
| Maintenance | ● Active (Last commit: Nov 11, 2026) · 25 open issues |
| Target Audience | Developers and engineering teams building with TypeScript, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 100/100 · Grade A+Yes, Mailspring is actively maintained. Continuous telemetry recorded the last code commit on Nov 11, 2026 (1 days ago). Supported by 18,003 stars and 1,066 community forks, this repository holds a calculated health index of 100/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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[](https://githubrepo.cloud/repo/Foundry376/Mailspring?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Foundry376/Mailspring?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Foundry376/Mailspring?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Foundry376/Mailspring?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Foundry376/Mailspring?utm_source=readme_badge)Momentum
+450
STARS · LAST 30 DAYS
15
PER DAY
#197
MOST-STARRED TypeScript
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +105 | +450 | +1.4K |
| Per day | 15 | 15 | 15 |
| Forks gained | +5 | +21 | +53 |
Mailspring gained 450 stars in the last 30 days, about 15 a day, and now has 18K. It is about 10 years old and has averaged roughly 1.8K stars a year. It ranks #197 among TypeScript repositories and #941 across all languages on GitHubRepo.
Trending Record
1
DAYS ON TRENDING
#9271
BEST RANK
Nov 12, 2026
FIRST APPEARANCE
Active
STATUS TODAY
Mailspring has maintained a continuous presence across global trending indexes, peaking at #9271. Below is the 30-day activity profile:
💡 Overview
Mailspring is an open-source project written in TypeScript: :love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
Engineered for speed, consistency, and developer ease, it solves common hurdles in electron, electron-app, email. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in TypeScript for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ npm install Mailspring⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
Node.js >= 18, npm, pnpm or bun
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
Mailspring coordinates its core functionality through a modular TypeScript pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Autonomous AI Agents
Orchestrate intelligent workflows and tool-calling routines with Mailspring.
Model Inference & Prompting
Integrate fast, local or cloud-hosted generative AI models directly into production code.
Context Memory & RAG
Augment language models with dynamic vector retrieval and structured project memory.
Developer Productivity
Automate repetitive engineering tasks, code generation, and test creation using AI agents.
🚀 Getting Started
Install Mailspring using your package manager: `npm install Mailspring`
Initialize your project workspace or configuration file for Mailspring.
Import Mailspring into your codebase or invoke it directly from your terminal.
Execute your test suite or run `Mailspring --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with TypeScript, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
Foundry376/Mailspring is currently ranked #941 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #936 | abseil/abseil-cpp | C++ | ★ 18.2K | Compare ↗ |
| #937 | tj/git-extras | Shell | ★ 18.1K | Compare ↗ |
| #938 | VictoriaMetrics/VictoriaMetrics | Go | ★ 18.1K | Compare ↗ |
| #939 | sweetalert2/sweetalert2 | JavaScript | ★ 18.1K | Compare ↗ |
| #940 | rowboatlabs/rowboat | TypeScript | ★ 18.1K | Compare ↗ |
| #941 | Foundry376/Mailspring This Project | TypeScript | ★ 18K | |
| #942 | NixOS/nix | C++ | ★ 18K | Compare ↗ |
| #943 | oblador/react-native-vector-icons | TypeScript | ★ 17.9K | Compare ↗ |
| #944 | ben-manes/caffeine | Java | ★ 17.9K | Compare ↗ |
| #945 | influxdata/telegraf | Go | ★ 17.9K | Compare ↗ |
| #946 | getmaxun/maxun | TypeScript | ★ 17.9K | Compare ↗ |
Frequently Asked Questions
What does Mailspring do? +
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
Is Mailspring actively maintained in 2026? +
Yes, Mailspring is actively maintained. The latest code push was recorded on Nov 11, 2026 (1 days ago). It holds a calculated Maintenance Health Score of 100/100 (A+ rating) with 18,003 stars and 25 open issues.
What language is Mailspring written in? +
The primary language is TypeScript. Topics include: electron, electron-app, email, imap, linux.
How many stars does Mailspring have? +
Mailspring has 18,003 stars and 1,066 forks on GitHub.
How does Mailspring rank among GitHub repositories? +
With 18,003 stars, Foundry376/Mailspring is ranked #941 globally across all repositories tracked on GitHubRepo and #197 among TypeScript projects.
What license is Mailspring distributed under? +
The repository reports a GPL-3.0 license. Always verify the repository LICENSE file for legal terms.
