Mail-in-a-box Alternatives

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

The Power Email App for busy professionals, like you.

Mailbird is the best email client for Windows 7, 8 and 10

Secure email with absolutely no compromises. Get your free encrypted email account today.

freemium €5.0 / Monthly (user - 5 GB)

A fully fledged, free email server solution, an open source project (GPL v2).

Zoho Mail is a webmail service built with the needs of a modern business in mind.

freemium $1.0 / Monthly (per user)

Web-based IMAP email client

Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more.

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.

eM Client is a Windows-based email client for sending and receiving emails, and managing calendars, contacts and tasks.

An open source mailserver suite.

Airmail is a lightweight and lightning fast mail client for Mac.