Alternatives to Postfix

Exim

Exim is an email server software package used on Unix-like operating systems such as Linux and macOS. It is one of the most popular mail servers in the world and is used to send and receive emails. It is a powerful, reliable, and efficient mail server that is highly configurable ...

MailHog

MailHog is an open-source email testing and debugging tool. It enables developers to quickly and easily test the emails they are sending without having to send them out to actual email addresses. It has a simple web interface that allows developers to quickly check the emails the...

sSMTP

sSMTP is a free, open source application for sending emails from a Linux command line or from a web server. It is a simple and lightweight solution for sending emails from a Linux server or a web server. It is designed to be used with a web based application, such as a webmail cl...

OpenSMTPD

OpenSMTPD is a free, open-source mail transfer agent (MTA) designed to be secure and easy to configure. It is used to route and deliver email messages between mail servers. It can be used to provide secure mail hosting on a local server or to set up a mail relay between multiple ...

Haraka

Haraka is an open source Node.js application platform that enables developers to quickly and easily build, deploy, and manage web applications. It provides a simple, intuitive user interface that allows developers to quickly create and manage their applications, without the need ...

msmtp

MSMTP is a free and open-source SMTP client software used to send emails from a computer to a server using the SMTP protocol. It is designed to be simple, lightweight, and secure. It supports all the major authentication methods, such as SMTP-AUTH, TLS, and SSL. It also supports ...

Sendmail

Sendmail is an open-source mail transfer agent (MTA) and mail delivery agent (MDA). It is a computer software package that is responsible for delivering emails from one server to another. It was originally developed by Eric Allman for Unix-based systems and is now used on a varie...

MailerQ

MailerQ is a powerful, reliable and easy to use application for managing large-scale email delivery and campaigns. It is a cloud-based mail delivery platform that allows you to send, track, and manage your emails quickly and efficiently. It offers a wide range of features, includ...

Microsoft SMTP Server

Microsoft SMTP Server is a server-side application designed to send emails from one computer to another over the internet. It is part of the Microsoft Exchange Server platform, which is used to manage emails, contacts, calendars, tasks, and other collaborative activities in a sec...

NikaMail

NikaMail is a cloud-based email productivity and collaboration platform for businesses of all sizes. It helps users to send, receive, and manage their emails efficiently in one place. It features an integrated suite of tools, such as task and contact management, scheduling, calen...

Courier-MTA

Courier-MTA is a messaging application designed to facilitate communication between users, particularly those in the same organization. It provides a centralized and secure platform for users to send and receive emails, attachments, and messages. It also allows users to collabora...

PowerMTA

PowerMTA is a powerful email delivery software solution designed for businesses looking to send large volumes of emails. It is a software-based email delivery system that helps businesses monitor, manage, and deliver email campaigns. It offers a wide range of features including a...

EmailSuccess

EmailSuccess is a business and enterprise application designed to help businesses and organizations manage their email communication and optimize their email marketing. It provides a suite of features and tools to help users create, manage, and track email campaigns from start to...

esmtp

The Extended Simple Mail Transfer Protocol (ESMTP) is an Internet standard for electronic mail transmission across the Internet. It is an extension of the original Simple Mail Transfer Protocol (SMTP) and is used to transmit messages between mail servers. It enables users to send...

Go-Guerrilla

Go-Guerrilla is an innovative web-based application that brings together the best of both worlds: the convenience and flexibility of an online office and the powerful productivity tools of a physical office. With Go-Guerrilla, users can easily create and collaborate on documents,...

Inbucket

Inbucket is an open-source, self-hosted email server and web application that helps users manage their email inboxes. It is designed to be simple to use and requires minimal effort to set up and maintain. It offers features such as email filtering, mail forwarding, email auto-res...

Lettre

Lettre is an office and productivity app that enables users to quickly and easily create professional-looking documents, including letters, reports, presentations, and forms. It provides a wide range of features to help users create documents that look professional and polished, ...

Hectane

Hectane is a cloud-based office and productivity platform that enables businesses to manage their workflow and collaborate in real-time. It offers a suite of tools designed to help teams work together more efficiently, such as document sharing, task management, file storage, and ...

Dragonfly Mail Agent

Dragonfly Mail Agent is an email automation tool designed to help individuals and businesses take control of their email communication. It allows users to schedule, send and receive emails, manage contacts, and track emails. It also features a variety of advanced features includi...

BulkMTA

BulkMTA is an online service software and application that enables users to quickly manage their mass email campaigns. It provides users with a variety of features, such as creating and scheduling email campaigns, tracking and analyzing email performance, and automating email pro...

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