OX Open-Xchange Alternatives [Page 3]

Designed for those who settle only for the best — CrossBox is beautiful, dazzlingly fast, and comes with advanced features that provide you and your team with cutting-edge communication technologies.

paid €6.3 / Monthly

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

Warm up your cold email inbox, and never land in spam anymore!

Try for free freemium $9.0 / Monthly

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

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

Xeams is a secure and powerful mail server for that includes a powerful spam filtering engine that...

NetWin SurgeMail is a best in the class webmail server for all kind of users from beginners to the professional one.

Full featured email server built in docker with free plan.

Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online

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

freemium €5.0 / Monthly (user - 5 GB)

Microsoft Office is an office suite of desktop applications, servers, and services for the Microsoft Windows and OS X operating systems.

Save time and scale faster with accessible, secure, and reliable cloud email services. A proven multitenant email solution for telcos and service providers.

freemium $1.3 / Monthly (Per mailbox)

EGroupware is free open source groupware software intended for businesses from small to enterprises.

qmail is the name of an advanced level of mail transfer agent for the UNIX based operating systems.