Alternatives to PowerMTA

Zentyal

Zentyal is an open source Linux-based server for small and medium-sized businesses. It is a unified network infrastructure solution that combines the most popular open source technologies such as Samba, Postfix, OpenLDAP, Squid, and others into a single, easy-to-manage platform. ...

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...

hMail Server

hMail Server is a free, open-source email server software for Windows and Linux. It is used to set up and manage email accounts and mailboxes on a server. It supports the most popular mail protocols such as IMAP, POP3 and SMTP for sending and receiving emails, as well as allowing...

Zimbra Collaboration Suite

Zimbra Collaboration Suite (ZCS) is a comprehensive collaboration platform designed to help organizations and individuals communicate, store and collaborate online. ZCS includes a suite of applications and services, including email, calendar, contacts, tasks, file sharing, chat, ...

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...

Faster, requires fewer resources (lower TCO), more flexible

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Because MailerQ offers a perpetual license now.

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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 ...

iMail

iMail is an email management platform, designed to help users maximize productivity and streamline their communications. It offers an easy-to-use interface and powerful features that allow users to send and receive emails, organize messages into folders, customize labels and filt...

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...

Microsoft Exchange Server

Microsoft Exchange Server is a popular email and calendar software application developed by Microsoft. It is used by businesses and organizations to facilitate communication, collaboration, and the sharing of documents. Exchange Server provides users with access to a secure and r...

SophiMail

SophiMail is an app (or website) that provides users with a secure, reliable, and easy to use platform for backing up their emails, files, contacts, and other data. It is designed to be both secure and user-friendly, allowing users to quickly and easily access their email account...

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...

Sanwhole Exchange

Sanwhole Exchange is a comprehensive office and productivity platform designed to help businesses and individual users streamline their workflow. The platform includes a suite of tools that enable users to manage their documents, collaborate with team members, and create presenta...

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...

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...

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...

Discontinued No longer supported.

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Xeams

Xeams is an advanced enterprise-level email server and collaboration solution designed to provide businesses with an efficient and secure way to manage their email communications. It offers a comprehensive set of features that include anti-spam and anti-virus protection, content ...

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...

SmarterMail Mail Server

SmarterMail is a comprehensive mail server solution that provides organizations of any size with the features they need to stay productive and secure. It includes features such as email, calendaring, contacts, tasks, notes, file sharing, and more. It is designed to be fast, secur...

PowerMTA

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