#1
Python library for accurately querying username and email usage on online platforms
1.8K starsApr 27, 2026 pushproductivity-automationPythonEmail
$ npx skills add iojw/socialscanAlternatives
Mailcat alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Mailcat
Find existing email addresses by nickname using API/SMTP checking methods without user notification. Please, don't hesitate to improve cat's job! 🐱🔎 📬
87
Quality
86
Trust
890
Stars
#2
holehe allows you to check if the mail is used on different sites like twitter, instagram and will retrieve information on sites with the forgotten password function.
11K starsSep 10, 2024 pushproductivity-automationPythonEmail
$ npx skills add megadose/holehe#3
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#4
Low code web framework for real world applications, in Python and Javascript
10K starsJun 16, 2026 pushproductivity-automationPythonEmail
$ npx skills add frappe/frappe#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
The SimpleLogin back-end and web app
6.7K starsJun 12, 2026 pushproductivity-automationPythonEmail
$ npx skills add simple-login/app#7
:mailbox: Cross-language temporary (disposable/throwaway) email detection library. Covers 55 734+ fake email providers.
1.9K starsJun 16, 2026 pushproductivity-automationPHPEmail
$ npx skills add FGRibreau/mailchecker#8
Insular email distribution - mail server as Docker images
7.3K starsMay 31, 2026 pushproductivity-automationPythonEmail
$ npx skills add Mailu/Mailu#9
a list of disposable email domains
5.1K starsJun 16, 2026 pushproductivity-automationPythonEmail
$ npx skills add disposable-email-domains/disposable-email-domains#10
Mail hosting made simple
3.5K starsJun 15, 2026 pushproductivity-automationPythonEmail
$ npx skills add modoboa/modoboa#11
Send email in Python conveniently for gmail using yagmail
2.7K starsMay 26, 2026 pushproductivity-automationPythonEmail
$ npx skills add kootenpv/yagmail#12
Django email backends and webhooks for Amazon SES, Brevo, MailerSend, Mailgun, Mailjet, Mailtrap, Postmark, Postal, Resend, Scaleway TEM, SendGrid, SparkPost, Unisender Go and more
1.9K starsApr 18, 2026 pushproductivity-automationPythonEmail
$ npx skills add anymail/django-anymail#13
A robust email syntax and deliverability validation library for Python.
1.4K starsJun 14, 2026 pushproductivity-automationPythonEmail
$ npx skills add JoshData/python-email-validator#14
A list of disposable/temporary email address domains
1.4K starsMay 19, 2026 pushproductivity-automationPythonEmail
$ npx skills add disposable/disposable#15
TREVORspray is a modular password sprayer with threading, clever proxying, loot modules, and more!
1.3K starsMay 21, 2026 pushproductivity-automationPythonEmail
$ npx skills add blacklanternsecurity/TREVORspray#16
What did I do on February 14th 2007? Visualize your (digital) life in Org-mode
1.1K starsMay 25, 2026 pushproductivity-automationPythonEmail
$ npx skills add novoid/MemacsHow 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 Mailcat 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.