#1
The open-source communication infrastructure for agents and products
39K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add novuhq/novuAlternatives
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Privacy-first, end-to-end encrypted Mail, Pages, Drive, and Calendar.
The open-source communication infrastructure for agents and products
$ npx skills add novuhq/novu💌 Build and send emails using React
$ npx skills add resend/react-emailExperience 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
$ npx skills add Mail-0/Zero🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.
$ npx skills add logto-io/logtoCloudFlare free temp domain email 免费收发 临时域名邮箱 支持附件 IMAP SMTP TelegramBot
$ npx skills add dreamhunter2333/cloudflare_temp_emailVirtual whiteboard for sketching hand-drawn like diagrams
$ npx skills add excalidraw/excalidraw:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
$ npx skills add Foundry376/MailspringThe classic email sending library for PHP
$ npx skills add PHPMailer/PHPMailer开源白板工具（SaaS），一体化白板，包含思维导图、流程图、自由画等。All in one open-source whiteboard tool with mind, flowchart, freehand and etc.
$ npx skills add plait-board/drawnixMail-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.
$ npx skills add mail-in-a-box/mailinaboxBillionMail 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
$ npx skills add Billionmail/BillionMailMJML: the only framework that makes responsive-email easy
$ npx skills add mjmlio/mjmlThunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
$ npx skills add thunderbird/thunderbird-androidA Cloudflare-based email service | 基于 Cloudflare 的邮箱服务 | Cloudflare Email 邮箱 Mail
$ npx skills add maillab/cloud-mail✉️ Send e-mails with Node.JS – easy as cake!
$ npx skills add nodemailer/nodemailerThe world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.
$ npx skills add elie222/inbox-zeroHow to choose
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 Skiff Apps if it already passes your workflow test and repository review.
Next step
Open the compare page, test the install commands in a sandbox, and check each repository before using a skill in production.