Introduction

What is Carbonio CE?

Zextras Carbonio CE is the free and open-source e-mail and collaboration software, which consists of

  • E-mail, Contacts and Calendar Essentials, all shareable across a domain

  • A complete mailserver, equipped with anti-spam and anti-virus software

  • Chat (upcoming)

  • File Management System including collaborative editing and document sharing

Strong points of Carbonio CE include:

  • focus on Data Sovereignty and Privacy

  • simplicity to install as Linux packages and ready to use out of the box

  • flexibility to cover the needs of today’s collaborative workplaces

Browser Compatibility

All Carbonio features are accessible from a browser: the supported browser are listed in Table 1.

Table 1 List of supported browsers

Browser

Version

OS

Supported

Microsoft Edge (Chromium)

Latest

Windows

Yes

Microsoft Edge (Chromium)

Others

Windows

Limited

Microsoft Edge (EdgeHTML)

Any

Windows

No

Internet Explorer

Any

Windows

No

Mozilla Firefox

Latest

Windows/Linux/OSX

Yes

Mozilla Firefox

ESR

Windows/Linux/OSX

Yes

Mozilla Firefox

Others

Windows/Linux/OSX

Limited

Google Chrome

Latest

Windows/Linux/OSX

Yes

Google Chrome

Others

Windows/Linux/OSX

Limited

Safari

Latest

OSX

Yes

Safari

Others

OSX

Limited

Items marked as “ Limited” are only supported on the browser’s two previous stable releases.

Hint

We suggest to always use the latest version available of the browser.

Licensing

Zextras Carbonio CE is Open Source and can be downloaded for free.

Available Languages

Carbonio CE's main language is English; the Web GUI is available in these languages

Officially included languages

  • English (GB, US, AU)

  • Dutch

  • French

  • German

  • Hindi

  • Indonesian

  • Italian

  • Japanese

  • Portoguese (PT, BR)

  • Russian

  • Simplified Chinese

  • Spanish

  • Thai

Community supported languages

  • Polish

  • Turkish

Volunteer Translators

Zextras makes available an online translation platform to qualified individuals wishing to help the translation process.

Translation in languages that are not currently supported is encouraged, albeit we cannot guarantee any estimate upon the official inclusion in the product.

Please contact for any information on the topic or to volunteer as a translator.

Contribution to the Documentation

The source code of Carbonio CE‘s documentation is now available in a public repository hosted on Github.

We are happy to accept any kind of documentation, written according to the guidelines, in form of a pull request. In case you have an idea for the documentation or you do not feel confident using Python Sphinx (the framework we use for writing documentation), you can send an e-mail to the address .

Seeking Help on Carbonio CE

Besides this documentation, Zextras makes available the following online resources:

Community

Zextras Community is a collection of articles, guidelines, howtos, and other useful material about Zextras products, including Carbonio CE, whose dedicated section is https://community.zextras.com/zextras-carbonio/

Official Discussion Forum

The Official Forum is the place where the community members interact, search for useful resources, provide own feedback, share their experiences, or comment articles. Carbonio CE has its own https://community.zextras.com/forum/carbonio-general-thread/ section