#1
Check if an email address exists without sending any email, written in Rust. Comes with a โ๏ธ HTTP backend.
8.8K starsMar 17, 2026 pushproductivity-automationRustEmail
$ npx skills add reacherhq/check-if-email-existsAlternatives
Lettre alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Lettre
a mailer library for Rust
100
Quality
92
Trust
2.2K
Stars
#2
The classic email sending library for PHP
22K starsJun 6, 2026 pushproductivity-automationPHPEmail
$ npx skills add PHPMailer/PHPMailer#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
๐ Build and send emails using React
19K starsJun 12, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add resend/react-email#5
The SimpleLogin back-end and web app
6.7K starsJun 12, 2026 pushproductivity-automationPythonEmail
$ npx skills add simple-login/app#6
Send email in Python conveniently for gmail using yagmail
2.7K starsMay 26, 2026 pushproductivity-automationPythonEmail
$ npx skills add kootenpv/yagmail#7
IMAP client library for Rust
575 starsJun 8, 2026 pushproductivity-automationRustEmail
$ npx skills add jonhoo/rust-imap#8
:white_check_mark: A Go library for email verification without sending any emails.
1.6K starsFeb 26, 2026 pushproductivity-automationGoEmail
$ npx skills add AfterShip/email-verifier#9
An email framework that converts simple HTML into responsive email-ready HTML.
697 starsApr 24, 2026 pushproductivity-automationRustEmail
$ npx skills add foundation/inky#10
MJML: the only framework that makes responsive-email easy
18K starsJun 12, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add mjmlio/mjml#11
A Cloudflare-based email service | ๅบไบ Cloudflare ็้ฎ็ฎฑๆๅก | Cloudflare Email ้ฎ็ฎฑ Mail
11K starsJun 9, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add maillab/cloud-mail#12
Experience email the way you want with Mail0 โ 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#13
A Privacy-first, Cross-platform Text Expander written in Rust
14K starsJun 14, 2026 pushproductivity-automationRustProductivity
$ npx skills add espanso/espanso#14
Thunderbird for Android โ Open Source Email App for Android (fka K-9 Mail)
14K starsJun 16, 2026 pushproductivity-automationKotlinEmail
$ npx skills add thunderbird/thunderbird-android#15
โ๏ธ Send e-mails with Node.JS โ easy as cake!
18K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add nodemailer/nodemailer#16
An SMTP gateway for Apprise notifications.
1.5K starsNov 24, 2025 pushproductivity-automationPythonEmail
$ npx skills add YoRyan/mailriseHow 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 Lettre 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.