58 Open source projects that are alternatives of or similar to holdmail

📚 Documentation for the Postal mail server!

A plugin for ActionMailer to send emails via MailPace.com

🌈 Mailamie is a simple SMTP catch all server for testing written in PHP.

SMTP server / sinkhole for collecting spam

What do you get when you mix a Raspberry Pi, a MySQL database, an RFID reader, an LCD touchscreen, a relay switch, an electronic door strike and a Twilio SMS account?

Blackhole is an MTA written on top of asyncio, utilising async and await statements that dumps all mail it receives to /dev/null.

A simple, coroutine based Kotlin Email API for both client- and server-side projects

Smtp server for mass emailing, managing email lists and more. Built on .NET Core. Linux, MAC and Windows compatible.

Send Emails In One Click With Python.

Mirrored from GitLab! Monitoring and automation for Open Source email servers, starting with Postfix. Please do not submit issues or PRs here - join us at: https://gitlab.com/lightmeter

SMTP mock server written on Golang. Mimic any 📤 SMTP server behavior for your test environment with fake SMTP server.

Simple Golang SMTP relay/proxy server

Golang SMTP server

Magento 2 SMTP Extension helps the owner of store simply install SMTP (Simple Mail Transfer Protocol) server which transmits the messages into codes or numbers.

A reimplementation of the Python stdlib smtpd.py based on asyncio.

A Lightweight High Performance ESMTP email server

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.

Simple SMTP server / postfix null relay host for your Docker and Kubernetes containers. Based on Alpine Linux.

Simple SMTP relay docker image.

Mini SMTP server written in golang

Papercut SMTP -- The Simple Desktop Email Server

Maildroid is a small robust android library for sending emails using SMTP server

netDumbster is a .Net Fake SMTP Server clone of the popular Dumbster

smtp4dev - the fake smtp email server for development and testing

Sendria (formerly MailTrap) is a SMTP server designed to run in your dev/test environment, that is designed to catch any email you or your application is sending, and display it in a web interface instead of sending to real world.

Local, web-based mail server application. Slurp mails into oblivion!

PHPAuth is a secure PHP Authentication class that easily integrates into any site.

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

Create custom SMTP servers on the fly

Exim Mail Transport Agent - source, testsuite and documentation

PostfixAdmin - web based virtual user administration interface for Postfix mail servers

A Python Mail Server

SMTP docker container

A SMTP Server component written in C#

A tiny software that receive a smtp request (email) and send it to the specified webhook as a http post request

📫 SMTP Server + Web Interface for viewing and testing emails during development.

Collaborative open-source successor to qmail

Send nice emails

Dockerized SMTP/IMAP server for development

Plugin for the Haraka SMTP server to store incoming and outgoing emails to MongoDB

Run sogo in a docker container.

Using PHPMailer in SilverStripe

SMTP-proxy that DKIM-signs e-mails before submission to an upstream SMTP-server.

Postfix SMTP relay docker image

Run ProtonMail Bridge in a docker container

End-to-end encrypted email for the mesh networking age

An SMTP server that converts emails into Pushover notifications.

Sources of euregjug.eu

Simple and easy to use catch-all SMTP mail server and debugging tool

SMTP server (library) for receiving emails, written in pure PHP.

A simple SMTP Server for Testing purposes. Emails are stored in an in-memory database and rendered in a Web UI

MITMsmtp is an Evil SMTP Server for pentesting SMTP clients to catch login credentials and mails sent over plain or SSL encrypted connections.

Buggregator is a beautiful, lightweight debug server build on Laravel that helps you catch your smpt, sentry, var-dump, monolog, ray outputs. It runs without installation on multiple platforms.

SophiMail Webadmin and Dashboard

A TLS Enabled Fake SMTP Server for Development

CHPC: Cheap Heat Pump Controller

Read/sync your IMAP mailboxes (python2)

Easy way to install a mail server.