PyPI
twisted/twisted
Event-driven networking engine written in Python.
Custom licenseAug 27, 2026 · metrics 2.10.0
All tags
Catalogue tag
#smtp
Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.
79 records
npm
haraka/Haraka
A fast, highly extensible, and event driven SMTP server
MITAug 28, 2026 · metrics 2.10.0
npm · Packagist
nextcloud/mail
💌 Mail app for Nextcloud
AGPL-3.0Jul 17, 2026 · metrics 2.10.0
PyPI · crates.io
chatmail/core
Chatmail Rust Core library, used by Android/iOS/desktop chatmail apps, bindings and bots 📧
Custom licenseAug 5, 2026 · metrics 2.10.0
NuGet · Maven · npm
apache/logging-log4net
Apache Log4net is a versatile, feature-rich, efficient logging API and backend for .NET
Apache-2.0Aug 22, 2026 · metrics 2.10.0
Maven
greenmail-mail-test/greenmail
Official master for the Greenmail project
Apache-2.0Aug 28, 2026 · metrics 2.10.0
Packagist
PHPMailer/PHPMailer
The classic email sending library for PHP
LGPL-2.1Aug 5, 2026 · metrics 2.10.0
PyPI · npm
Wh1isper/mcp-email-server
IMAP and SMTP via MCP Server
BSD-3-ClauseAug 1, 2026 · metrics 2.10.0
Packagist
cypht-org/cypht
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
LGPL-2.1Sep 5, 2026 · metrics 2.10.0
crates.io
lettre/lettre
a mailer library for Rust
MITAug 5, 2026 · metrics 2.10.0
crates.io
stalwartlabs/stalwart
All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
Custom licenseAug 27, 2026 · metrics 2.10.0
npm
forwardemail/forwardemail.net
Privacy-focused encrypted email for everyone. All-in-one alternative to Gmail + Mailchimp + Sendgrid.
Custom licenseSep 6, 2026 · metrics 2.10.0
Packagist
jasonmunro/cypht
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
LGPL-2.1Jul 17, 2026 · metrics 2.10.0
Packagist
jasonmunro/hm3
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
LGPL-2.1Jul 17, 2026 · metrics 2.10.0
Go · npm
a-novel-kit/golib
Shared Go libraries.
MITAug 5, 2026 · metrics 2.10.0
npm · Go
marle3003/mokapi
Your API mocking tool for OpenAPI and AsyncAPI using Go and JavaScript - https://mokapi.io
MITSep 6, 2026 · metrics 2.10.0
npm
n24q02m/better-email-mcp
IMAP/SMTP email for AI agents -- read, send, organize folders, and manage attachments across multiple accounts, with auto-discovery.
MITJul 16, 2026 · metrics 2.10.0
Packagist
nette/mail
A handy library for creating and sending emails in PHP
Custom licenseAug 22, 2026 · metrics 2.10.0
NuGet
jstedfast/MailKit
A cross-platform .NET library for IMAP, POP3, and SMTP.
MITAug 22, 2026 · metrics 2.10.0
PyPI
cole/aiosmtplib
asyncio smtplib implementation
MITAug 27, 2026 · metrics 2.10.0
PyPI
pallets-eco/flask-mail
Flask-Mail adds SMTP mail sending to your Flask applications
BSD-3-ClauseJul 18, 2026 · metrics 2.10.0
RubyGems
postalserver/postal
📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
MITAug 5, 2026 · metrics 2.10.0
PyPI
pytest-dev/pytest-localserver
pytest plugin to test server connections locally. This repository was migrated from Bitbucket.
MITJul 21, 2026 · metrics 2.10.0
RubyGems
sisimai/rb-Sisimai
Mail Analyzing Interface for email bounce: A Ruby library to parse RFC5322 bounce mails and generating structured data as JSON from parsed results. Ruby version of Sisimai: an error mail analyzer.
Custom licenseJul 17, 2026 · metrics 2.10.0
Go · npm
tokencanopy/e2a
Authenticated email gateway for AI agents — SPF/DKIM verified inbound, HMAC-signed delivery, webhook + WebSocket fan-out, CLI + SDKs
Apache-2.0Jul 19, 2026 · metrics 2.10.0
Packagist
buggregator/trap
A local debug server and utilities set for PHP projects
BSD-3-ClauseAug 13, 2026 · metrics 2.10.0
npm
happyvertical/sdk
No repository description published.
MITAug 22, 2026 · metrics 2.10.0
crates.io
pimalaya/himalaya
CLI to manage emails
Apache-2.0Aug 28, 2026 · metrics 2.10.0
npm
nikolausm/imap-mcp-server
A powerful Model Context Protocol (MCP) server for IMAP email integration with Claude
MITJul 21, 2026 · metrics 2.10.0
Maven
phax/ph-web
Java library with common web stuff
Apache-2.0Aug 28, 2026 · metrics 2.10.0