#1
The classic email sending library for PHP
22K starsJun 6, 2026 pushproductivity-automationPHPEmail
$ npx skills add PHPMailer/PHPMailerAlternatives
Magento 2 Smtp alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Magento 2 Smtp
Magento 2 SMTP Extension helps the owner of store simply install SMTP (Simple Mail Transfer Protocol) server which transmits the messages into codes or numbers.
71
Quality
77
Trust
302
Stars
#2
The open-source communication infrastructure for agents and products
39K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add novuhq/novu#3
: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#4
💌 Build and send emails using React
19K starsJun 12, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add resend/react-email#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
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#7
MJML: the only framework that makes responsive-email easy
18K starsJun 12, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add mjmlio/mjml#8
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#9
Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
14K starsJun 16, 2026 pushproductivity-automationKotlinEmail
$ npx skills add thunderbird/thunderbird-android#10
Experience email the way you want with Mail0 – the first open source email app that puts your privacy and safety first. Join the discord: https://mail0.link/discord
11K starsMay 26, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add Mail-0/Zero#11
✉️ Send e-mails with Node.JS – easy as cake!
18K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add nodemailer/nodemailer#12
Low code web framework for real world applications, in Python and Javascript
10K starsJun 16, 2026 pushproductivity-automationPythonEmail
$ npx skills add frappe/frappe#13
🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.
12K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add logto-io/logto#14
CloudFlare free temp domain email 免费收发 临时域名邮箱 支持附件 IMAP SMTP TelegramBot
10.0K starsJun 13, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add dreamhunter2333/cloudflare_temp_email#15
Prometheus Alertmanager
8.5K starsJun 16, 2026 pushproductivity-automationGoEmail
$ npx skills add prometheus/alertmanager#16
The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.
11K starsJun 15, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add elie222/inbox-zeroHow 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 Magento 2 Smtp 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.