A free & open modern, fast email client with user-friendly encryption and privacy features

A cross-platform .NET library for IMAP, POP3, and SMTP.

Simple API, Complex Emails (Jakarta Mail smtp wrapper)

Modern email for teams and professionals. A replacement for outdated email technology and tools. Alt to hey.com, front.com, missiveapp.com

Golang package for send email. Support keep alive connection, TLS and SSL. Easy for bulk SMTP.

asyncio smtplib implementation

The collaborative Open Source successor to qmail and netqmail

Our Friendly Gmail will act as Server and implant will exfiltrate data via smtp and will read commands from C2 (Gmail) via imap protocol

Makes sending emails easy and DRY — For Python 3.

mailproxy is a simple SMTP proxy. It receives emails through an unencrypted, unauthenticated SMTP interface and retransmits them through a remote SMTP server that requires modern features such as encryption and/or authentication. mailproxy is primarily useful for enabling email functionality in legacy software that only supports plain SMTP.

Ansible role to set up postfix in Debian-like systems

High throughput Go SMTP pool library with graceful handling of idle timeouts, errors, and retries.

Ballerina module to send and receive emails

Minimal SMTP client in Go. Handles MX lookup, mail server connection on common ports.

IMAP, POP3 and SMTP clients for Dart developers. Contains both low level as well as a high level API.

SMTP Client Library in C

ESP32 with HTTP server, Telnet server, file system, FTP server FTP client, SMTP client, cron daemon and user management

💌 SMTP client library for Clojure. That’s it.

Object-Oriented Email Sending Java SDK

Moved to https://github.com/SimplifyNet. Simplify is a set of .NET libraries that provide infrastructure for your applications. DI and mocking friendly.