OpenMailBox Alternatives [Page 4]

Webmail service. Powered by RainLoop.

Mailvelope open source project. OpenPGP in your browser.

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

End-to end encrypted email service with no stored metadata

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.

freemium

Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

Open Source

Easy to use end-to-end encrypted email. Secure and private email.

freemium €2.5 / Monthly (Entry, 5GB emails,10 aliases,)

A/I provides tools for anonymous communication and sharing.

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

SquirrelMail is a standards-based webmail package written in PHP.

Open Source

Free email, file storage, sms and more.