596 Open source projects that are alternatives of or similar to Exim

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 Python Mail Server

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

Collaborative open-source successor to qmail

Papercut SMTP -- The Simple Desktop Email Server

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

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.

mailing lists - the unix way

Send email in Python conveniently for gmail using yagmail

Email-based instant messaging for Desktop.

Insular email distribution - mail server as Docker images

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

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 legitimate email replacement — n-identity, decentralized, store-and-forward, open protocol, open source. (Server)

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

VMime Mail Library

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

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

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 elegant MIME/SMTP email library with support for attachments

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

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

Actively maintained fork of gomail. The best way to send emails in Go.

Smart Bulk Email Sender with Mail Merge, Delay between Emails and HTML Content

Check if an email address exists without sending any email, written in Rust.

A lightweight SMTP mail library

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.

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

'DANE for SMTP' wiki

Sending HTML email using Go 💌

SMTP docker container

Swift SMTP client

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

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

An SMTP adapter for Bamboo.

Makes sending emails easy and DRY — For Python 3.

Lightweight SMTP client written in Go

⚡️Arduino Mail Client Library to send, read and get incoming mail notification for ESP32, ESP8266 and SAMD21 devices. The library also supported other Arduino devices using Clients interfaces e.g. WiFiClient, EthernetClient, and GSMClient.

Easily send great-looking HTML email messages from R

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

A SMTP Server component written in C#

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

A python 3+ program to spam emails to a list of users repetitively

Aplus Framework Email Library

基于 Net.Mail 封装的发送邮件工具类。仅需一行代码，发送邮件。支持自定义邮件发出邮箱、发出方名字等。 支持SSL加密发送。 多个接收人、抄送人。支持群发独显。 支持添加附件、多个附件。 目前大部分主流邮箱全支持。

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

An SMTP server that converts emails into Pushover notifications.

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

Send nice emails

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

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

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

A throwaway smtp server with API

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

The classic email sending library for PHP

Mailway installer, host your own Mailway instance

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.

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

Run ProtonMail Bridge in a docker container

Configure Magento 2 to send email using Google App, Gmail, Amazon Simple Email Service (SES), Microsoft Office365 and many other SMTP (Simple Mail Transfer Protocol) servers