217 Open source projects that are alternatives of or similar to catapulte

Send nice emails

OX COI Messenger - a Flutter app for the COI (Chat Over IMAP) standard

An SMTP library written in C++ for Qt. Allows applications to send emails (MIME with text, html, attachments, inline files, etc.) via SMTP. Supports SSL and SMTP authentication.

Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

The best free email forwarding for custom domains. Visit our website to get started (SMTP server)

✉️ Composable all-in-one mail server.

qpsmtpd is a flexible smtpd daemon written in Perl

Swaks - Swiss Army Knife for SMTP

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.

🌟 FastSitePHP 🌟 A Modern Open Source Framework for building High Performance Websites and API’s with PHP

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

Swift SMTP client

Makes sending emails easy and DRY — For Python 3.

Papercut SMTP -- The Simple Desktop Email Server

Golang SMTP server

✉️ A fully featured open source mail delivery platform for incoming & outgoing e-mail

Golang package that generates clean, responsive HTML e-mails for sending transactional mail

Visual Studio Code extension that provides commands to deploy files of a workspace to a destination.

An SMTP gateway for Apprise notifications.

Get a programmable email address. Automate what happens when you receive emails. It's like Zapier for devs who hate emails.

✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat

Mailway installer, host your own Mailway instance

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.

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

This tool generates gopher link for exploiting SSRF and gaining RCE in various servers

Emailing wrapper for Vapor 3 apps

Mini SMTP server written in golang

VMime Mail Library

✅ A Go library for email verification without sending any emails.

DavMail POP/IMAP/SMTP/Caldav/Carddav/LDAP Exchange and Office 365 Gateway - Synced with main subversion repository at

mailing lists - the unix way

Lightweight SMTP client written in Go

The magma server daemon, is an encrypted email system with support for SMTP, POP, IMAP, HTTP and MOLTEN,. Additional support for DMTP and DMAP is currently in active development.

短信转发器——监控Android手机短信、来电、APP通知，并根据指定规则转发到其他手机：钉钉群自定义机器人、钉钉企业内机器人、企业微信群机器人、飞书机器人、企业微信应用消息、邮箱、bark、webhook、Telegram机器人、Server酱、PushPlus、手机短信等。包括主动控制服务端与客户端，让你轻松远程发短信、查短信、查通话、查话簿、查电量等。（V3.0 新增）PS.这个APK主要是学习与自用，如有BUG请提ISSUE，同时欢迎大家提PR指正

Recoded version of Visual Studio Code extension 'vs-deploy', which provides commands to deploy files to one or more destinations.

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

All in one email sender for .NET. Supports popular senders (SendGrid, MailGun, etc) and Razor templates.

An elegant MIME/SMTP email library with support for attachments

Send a notebook as an email

Top geek's chindogu - personal assistant over satellite/telephone/SMS/chatbot, plus web infrastructure servers (web & mail, ad-free DNS, web proxy, SNMP, etc)

Eventum Issue Tracking System

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

An SMTP adapter for Bamboo.

📩🛡 Email privacy. Anonymously send and receive with alias forwarding.

small python3 tool to check common vulnerabilities in SMTP servers

Insular email distribution - mail server as Docker images

MailMergeLib is a mail message client library which provides comfortable mail merge capabilities for text, inline images and attachments, as well as good throughput and fault tolerance for sending mail messages.

A Lightweight High Performance ESMTP email server

.NET email library and proxy supporting IMAP, POP3, and SMTP with S/MIME and PGP.

Reusable application for Django introducing a message delivery framework

Very crude and poorly written HTTP(s) and SMTP bin

Send email in Python conveniently for gmail using yagmail

The complete and secured Mail Client for ESP32, sending and reading the E-mail through the SMTP and IMAP servers.

A light-weight, modular, message representation and mail delivery framework for Python.

Send email to any SMTP server like a boss, in Swift and cross-platform

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

Grapesjs integration for Mautic

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

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.

Fast Advanced Spam Analysis Tool