#1
Mail hosting made simple
3.5K starsJun 15, 2026 pushproductivity-automationPythonEmail
$ npx skills add modoboa/modoboaAlternatives
BillionMail alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
BillionMail
BillionMail gives you open-source MailServer, NewsLetter, Email Marketing โ fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr
100
Quality
98
Trust
15K
Stars
#2
โ๏ธ Composable all-in-one mail server.
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$ npx skills add foxcpp/maddy#3
๐ง Easy to use, yet comprehensive library for sending mails with Go
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$ npx skills add wneessen/go-mail#4
Notifuse is an open-source & modern emailing platform
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$ npx skills add Notifuse/notifuse#5
: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#6
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#7
A Cloudflare-based email service | ๅบไบ Cloudflare ็้ฎ็ฎฑๆๅก | Cloudflare Email ้ฎ็ฎฑ Mail
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$ npx skills add maillab/cloud-mail#8
Prometheus Alertmanager
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$ npx skills add prometheus/alertmanager#9
โ๏ธ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat
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$ npx skills add neomutt/neomutt#10
Bichon โ A lightweight, high-performance Rust email archiver with WebUI
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$ npx skills add rustmailer/bichon#11
A dead simple Go library for sending notifications to various messaging services.
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$ 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
Dovecot mail server
1.2K starsJun 12, 2026 pushproductivity-automationCEmail
$ npx skills add dovecot/core#14
The classic email sending library for PHP
22K starsJun 6, 2026 pushproductivity-automationPHPEmail
$ npx skills add PHPMailer/PHPMailer#15
The open-source communication infrastructure for agents and products
39K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add novuhq/novu#16
๐ Build and send emails using React
19K starsJun 12, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add resend/react-emailHow 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 BillionMail 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.