Blue-Mind Alternatives

OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

Network Solutions - Original domain name registration and reservation services with variety of internet-related business offerings. Quick, dependable and reliable.

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

Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.

Web-based IMAP email client

Open Source

Horde Groupware is a free, enterprise ready, browser based collaboration suite.

Private email server with collaboration tools, ensures Data Portability and helps you comply with the GDPR in a cost-efficient way. Start Free trial now.

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

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

Open Source

Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.

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