#1
Anonymous email forwarding
4.7K starsMay 28, 2026 pushproductivity-automationPHPEmail
$ npx skills add anonaddy/anonaddyAlternatives
Mailchecker alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Mailchecker
:mailbox: Cross-language temporary (disposable/throwaway) email detection library. Covers 55 734+ fake email providers.
100
Quality
95
Trust
1.9K
Stars
#2
PHP Email address validator
12K starsMar 20, 2025 pushproductivity-automationPHPEmail
$ npx skills add egulias/EmailValidator#3
The classic email sending library for PHP
22K starsJun 6, 2026 pushproductivity-automationPHPEmail
$ npx skills add PHPMailer/PHPMailer#4
Converts CSS styles into inline style attributes in your HTML code.
947 starsJun 14, 2026 pushproductivity-automationPHPEmail
$ npx skills add MyIntervals/emogrifier#5
Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.
8.8K starsMar 17, 2026 pushproductivity-automationRustEmail
$ npx skills add reacherhq/check-if-email-exists#6
✉️ Open-Source Email API for Developers. Cloud & Self-hosted Alternative to SES, Mailgun, SendGrid.
635 starsJun 10, 2026 pushproductivity-automationPHPEmail
$ npx skills add hyvor/relay#7
A fully tested email parser for PHP 8.0+ (mailparse extension wrapper).
992 starsMay 14, 2026 pushproductivity-automationPHPEmail
$ npx skills add php-mime-mail-parser/php-mime-mail-parser#8
FiercePhish is a full-fledged phishing framework to manage all phishing engagements. It allows you to track separate phishing campaigns, schedule sending of emails, and much more.
1.4K starsJan 9, 2024 pushproductivity-automationPHPEmail
$ npx skills add Raikia/FiercePhish#9
Object-oriented, fully tested PHP IMAP library
918 starsMar 16, 2026 pushproductivity-automationPHPEmail
$ npx skills add ddeboer/imap#10
The Official Twilio SendGrid PHP API Library
1.5K starsFeb 22, 2025 pushproductivity-automationPHPEmail
$ npx skills add sendgrid/sendgrid-php#11
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#12
💌 Build and send emails using React
19K starsJun 12, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add resend/react-email#13
MJML: the only framework that makes responsive-email easy
18K starsJun 12, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add mjmlio/mjml#14
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#15
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#16
Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
14K starsJun 16, 2026 pushproductivity-automationKotlinEmail
$ npx skills add thunderbird/thunderbird-androidHow 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 Mailchecker 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.