Alternatives to Microsoft SMTP Server

Postfix

Postfix is an open-source mail transfer agent (MTA) that is designed to route and deliver email. It is a reliable, secure, and fast mail server that is used by many organizations around the world. It is an ideal solution for those who need an efficient and cost-effective email so...

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 ...

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 ...

Atmail Email Server

Atmail Email Server is a powerful, secure, and reliable open source email server that provides comprehensive protection for your business or organization's email accounts. It enables users to quickly and easily access their emails with the help of its advanced webmail interface a...

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...

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...

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...

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...

AtMail Open

AtMail Open is an open-source, web-based email client that helps users manage their mail accounts from anywhere. It is designed to be fast, secure, and easy to use. AtMail Open provides a comprehensive messaging system that allows users to send and receive emails, manage contacts...

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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 ...

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...

ArgoSoft Mail Server

ArgoSoft Mail Server is an enterprise-level mail server software solution that offers businesses and organizations a secure, reliable, and feature-rich platform to securely manage email communication. This solution provides a range of features and capabilities to help organizatio...

Microsoft SMTP Server

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