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Secure & Modern All-in-One Mail Server (IMAP, JMAP, POP3, SMTP)

Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and soon EWS

A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features

Insular email distribution - mail server as Docker images

The missing POP3 💌 server for Amazon Simple Email Service - written in golang.

An IMAP/POP/SMTP proxy that transparently adds OAuth 2.0 authentication for email clients that don't support this method.

Move from POP3 to Maildir

A Java library for looking up published mailserver configurations for clients for a given domain.

Eventum Issue Tracking System

HTML2POP3 is a virtual POP3, SMTP and NNTP server

Disposable webmail server (similar to Mailinator) with built in SMTP, POP3, RESTful servers; no DB required.

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

mailio is a cross platform C++ library for MIME format and SMTP, POP3, IMAP protocols. It is based on the standard C++ 17 and Boost library.

A Simple Email Client for PHP

Smart Framework - A High Performance PHP / Javascript Framework for Web Projects

Official master for the Greenmail project

Dovecot mail server

Mailozaurr is a PowerShell module that aims to provide SMTP, POP3, IMAP and probably some other ways to interact with Email. Underneath it uses MimeKit and MailKit libraries written by Jeffrey Stedfast.

This is a setup for a Tor based mail hosting server