InboxCube is described as 'For us Email is our lives. At the heart of our inbox lives a personal network of information and content that privately defines who we are' and is a webmail provider in the office & productivity category. There are more than 25 alternatives to InboxCube for a variety of platforms, including Web-based, Android, iPhone, iPad and Android Tablet apps. The best InboxCube alternative is Proton Mail, which is both free and Open Source. Other great apps like InboxCube are Gmail, Tuta Mail, Outlook.com and mailbox.
Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project.
Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server application intended for users who need a clean and simple web mail application, which is fast and easy to use. Whether you need a free web browser based email client software for Windows ASP.
Runbox offers email hosting, domain hosting, and web hosting services, as well as custom-made email solutions
eclipso Mail & Cloud is an complete and secure e-mail system from Germany with many useful and practical functions: Antispam, unlimited email folders, webmail, mobile app, Postoffice, fax and cloud storage. and many more.
The Gmail you love, now lighter and just as fast. Enjoy a smart inbox that keeps your messages safe and you organized. Receive notifications when mail arrives, then read and respond both online & offline. Plus, find messages quickly with powerful search and lots more.
SCRYPTmail is true end-to-end encrypted email service. Email and meta data, i.e sender / recipient are encrypted when you communicate within scryptmail domain.
Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode to fetch messages it uses database fields to simulate IMAP folders, on which you can save, move, delete, and...
Fripost – the Free Email Association. Fripost organize the people who want an alternative to "free" e-mail services where you are constantly under surveillance and personal data is handed over to third parties.
Unofficial, free and open-source Google Inbox Desktop App. Built using electron, Inboxer includes a menu bar which is globalmenu compatible and works, and keyboard shortcuts.
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