#1
Bootstrap stylesheet, compiler, and inliner for responsive and consistent emails with the Bootstrap syntax you know and love.
1.2K starsDec 19, 2025 pushproductivity-automationHTMLEmail
$ npx skills add bootstrap-email/bootstrap-emailAlternatives
Letter Opener Web alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Letter Opener Web
A web interface for browsing Ruby on Rails sent emails
80
Quality
84
Trust
814
Stars
#2
Juice inlines CSS stylesheets into your HTML source.
3.3K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add Automattic/juice#3
Notifications for Ruby on Rails applications
2.7K starsApr 8, 2026 pushproductivity-automationRubyEmail
$ npx skills add excid3/noticed#4
The open-source communication infrastructure for agents and products
39K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add novuhq/novu#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
💌 Build and send emails using React
19K starsJun 12, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add resend/react-email#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
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#10
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#11
✉️ Send e-mails with Node.JS – easy as cake!
18K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add nodemailer/nodemailer#12
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#13
Converts CSS styles into inline style attributes in your HTML code.
947 starsJun 14, 2026 pushproductivity-automationPHPEmail
$ npx skills add MyIntervals/emogrifier#14
The SimpleLogin back-end and web app
6.7K starsJun 12, 2026 pushproductivity-automationPythonEmail
$ npx skills add simple-login/app#15
Use Tailwind CSS to design HTML emails.
3.2K starsNov 6, 2023 pushproductivity-automationJavaScriptEmail
$ npx skills add soheilpro/mailwind#16
Anonymous email forwarding
4.7K starsMay 28, 2026 pushproductivity-automationPHPEmail
$ npx skills add anonaddy/anonaddyHow 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 Letter Opener Web 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.