Apps similar to CrossBox include Roundcube, which is free and open source. Other options are eigen, Google Workspace, mailcow: dockerized and Nextcloud Hub. There's no shortage of Mail Servers like CrossBox, with more than 25 alternatives for Linux, the web, self-hosting, Windows and Mac.
Virtual Office, Online Office, Digital Learning Space, Online Groupware - ContactOffice, Keep a virtual office on the web. Share documents, contacts, calendar, tasks, ... with clients, students, suppliers, friends or family.
Belgium
EU
HyperOffices is a Microsoft Exchange alternative with all the messaging features growing business need - custom business email; Outlook email; shared Outlook contacts, calendars and tasks; web and mobile email; Outlook synchronization; shared calendars, contacts, tasks and...
MailShogun is a plugin that creates domain emails easily. You can pick between your professional and regular e-mail address when sending or receiving from your regular g-mail account. One of the cheapest mail forwarding services you can find on the web.
South Korea
Established in January 2000, Alinto is one othe principal french editors and operators of collaborative messaging and unified communications. Alinto manages over 4000 areas of professional messaging and more than a million users in 5 countries.
Mox is a modern full-featured open source secure mail server for low-maintenance self-hosted email.
DeskNow is a fully featured and easy to use mail and collaboration server with build-in antivirus and antispam. SyncML for mobile devices is separately licensed.
Hub For Teams gives you and your team 100% control of your data and workspace. Enjoy enterprise collaboration features such as project management, discussion rooms, and much more.
EmailSuccess, an advanced SMTP Server (MTA) built from the ground up to handle the most critical reliability, performance, security, and deliverability requirements.
ItalyEU
Office EU is a 100% European office suite with email, documents, calendar, and cloud storage. Open-source, GDPR-compliant, and free from foreign jurisdiction.
NetherlandsEU
Vietnam
The AI-powered client portal for professional & creative services. Streamline client onboarding and deliver a stellar customer experience.
United States
