#1
✉️ Composable all-in-one mail server.
6.0K starsMay 26, 2026 pushproductivity-automationGoEmail
$ npx skills add foxcpp/maddyAlternatives
Mailspring alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Mailspring
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
100
Quality
98
Trust
18K
Stars
#2
A Cloudflare-based email service | 基于 Cloudflare 的邮箱服务 | Cloudflare Email 邮箱 Mail
11K starsJun 9, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add maillab/cloud-mail#3
Sieve Script Editor
882 starsJun 10, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add thsmi/sieve#4
:love_letter: An extensible desktop mail app built on the modern web. Forks welcome!
25K starsNov 24, 2022 pushproductivity-automationJavaScriptProductivity
$ npx skills add nylas/nylas-mail#5
✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat
3.7K starsJun 15, 2026 pushproductivity-automationCEmail
$ npx skills add neomutt/neomutt#6
An application that tracks your time by monitoring your active window title and idle time.
1.1K starsApr 8, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add MayGo/tockler#7
Bichon – A lightweight, high-performance Rust email archiver with WebUI
1.8K starsJun 11, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add rustmailer/bichon#8
Decentralized private messenger with chat-shared tools and games for Desktop
1.5K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add deltachat/deltachat-desktop#9
:postbox: Gmail desktop app for macOS, Windows & Linux (formerly Gmail Desktop)
1.0K starsJun 15, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add zoidsh/meru#10
Dovecot mail server
1.2K starsJun 12, 2026 pushproductivity-automationCEmail
$ npx skills add dovecot/core#11
Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
15K starsMay 24, 2026 pushproductivity-automationPythonEmail
$ npx skills add mail-in-a-box/mailinabox#12
BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr
15K starsJun 11, 2026 pushproductivity-automationGoEmail
$ npx skills add Billionmail/BillionMail#13
Wavebox, the revolutionary and feature-rich Chromium browser that's built for productive working across Google Workspaces, Microsoft Teams, ClickUp, Monday, Atlassian, Asana, AirTable, Slack, and every other web app you use to get work done.
1.4K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add wavebox/waveboxapp#14
terminal mail client, mirror of https://git.meli-email.org/meli/meli.git https://crates.io/crates/meli
868 starsJun 12, 2026 pushproductivity-automationRustEmail
$ npx skills add meli/meli#15
A cross-platform .NET library for IMAP, POP3, and SMTP.
6.8K starsJun 12, 2026 pushproductivity-automationC#Email
$ npx skills add jstedfast/MailKit#16
MJML: the only framework that makes responsive-email easy
18K starsJun 12, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add mjmlio/mjmlHow to choose
When should you switch?
Use an alternative when it has a clearer install path, higher trust score, fresher maintenance, or better platform fit for your current agent stack. Keep Mailspring if it already passes your workflow test and repository review.
Next step
Compare top candidates side by side
Open the compare page, test the install commands in a sandbox, and check each repository before using a skill in production.