#1
A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.
2.0K starsJun 15, 2026 pushproductivity-automationC#Email
$ npx skills add jstedfast/MimeKitAlternatives
MailKit alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
MailKit
A cross-platform .NET library for IMAP, POP3, and SMTP.
100
Quality
94
Trust
6.8K
Stars
#2
✉️ Composable all-in-one mail server.
6.0K starsMay 26, 2026 pushproductivity-automationGoEmail
$ npx skills add foxcpp/maddy#3
Insular email distribution - mail server as Docker images
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$ npx skills add Mailu/Mailu#4
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$ npx skills add pimalaya/himalaya#5
✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat
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$ npx skills add neomutt/neomutt#6
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
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$ npx skills add Foundry376/Mailspring#7
terminal mail client, mirror of https://git.meli-email.org/meli/meli.git https://crates.io/crates/meli
868 starsJun 12, 2026 pushproductivity-automationRustEmail
$ npx skills add meli/meli#8
Anonymous email forwarding
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$ npx skills add anonaddy/anonaddy#9
Work with email by IMAP
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$ npx skills add ikvk/imap_tools#10
Bichon – A lightweight, high-performance Rust email archiver with WebUI
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$ npx skills add rustmailer/bichon#11
Decentralized private messenger with chat-shared tools and games for Desktop
1.5K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add deltachat/deltachat-desktop#12
Simple API, Complex Emails (Jakarta Mail smtp wrapper)
1.3K starsJun 5, 2026 pushproductivity-automationJavaEmail
$ npx skills add bbottema/simple-java-mail#13
An IMAP/POP/SMTP proxy that transparently adds OAuth 2.0 authentication for email clients that don't support this method. Keep legacy email clients working with Exchange Online, Gmail and other providers.
1.4K starsApr 21, 2026 pushproductivity-automationPythonEmail
$ npx skills add simonrob/email-oauth2-proxy#14
Dovecot mail server
1.2K starsJun 12, 2026 pushproductivity-automationCEmail
$ npx skills add dovecot/core#15
The Official Twilio SendGrid C#, .NetStandard, .NetCore API Library
1.1K starsJul 23, 2024 pushproductivity-automationC#Email
$ npx skills add sendgrid/sendgrid-csharp#16
Papercut SMTP -- The Simple Desktop Email Server
3.3K starsApr 6, 2026 pushproductivity-automationC#Email
$ npx skills add ChangemakerStudios/Papercut-SMTPHow 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 MailKit 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.