#1
Insular email distribution - mail server as Docker images
7.3K starsMay 31, 2026 pushproductivity-automationPythonEmail
$ npx skills add Mailu/MailuAlternatives
Maddy alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Maddy
✉️ Composable all-in-one mail server.
100
Quality
94
Trust
6.0K
Stars
#2
Dovecot mail server
1.2K starsJun 12, 2026 pushproductivity-automationCEmail
$ npx skills add dovecot/core#3
📧 Easy to use, yet comprehensive library for sending mails with Go
1.4K starsJun 15, 2026 pushproductivity-automationGoEmail
$ npx skills add wneessen/go-mail#4
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
18K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add Foundry376/Mailspring#5
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#6
:white_check_mark: A Go library for email verification without sending any emails.
1.6K starsFeb 26, 2026 pushproductivity-automationGoEmail
$ npx skills add AfterShip/email-verifier#7
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#8
A cross-platform .NET library for IMAP, POP3, and SMTP.
6.8K starsJun 12, 2026 pushproductivity-automationC#Email
$ npx skills add jstedfast/MailKit#9
✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat
3.7K starsJun 15, 2026 pushproductivity-automationCEmail
$ npx skills add neomutt/neomutt#10
Bichon – A lightweight, high-performance Rust email archiver with WebUI
1.8K starsJun 11, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add rustmailer/bichon#11
A dead simple Go library for sending notifications to various messaging services.
3.7K starsJun 15, 2026 pushproductivity-automationGoEmail
$ npx skills add nikoksr/notify#12
MIME mail encoding and decoding package for Go
517 starsJun 7, 2026 pushproductivity-automationGoEmail
$ npx skills add jhillyerd/enmime#13
Simple API, Complex Emails (Jakarta Mail smtp wrapper)
1.3K starsJun 5, 2026 pushproductivity-automationJavaEmail
$ npx skills add bbottema/simple-java-mail#14
Notifuse is an open-source & modern emailing platform
2.0K starsJun 15, 2026 pushproductivity-automationGoEmail
$ npx skills add Notifuse/notifuse#15
The classic email sending library for PHP
22K starsJun 6, 2026 pushproductivity-automationPHPEmail
$ npx skills add PHPMailer/PHPMailer#16
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-mailHow 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 Maddy 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.