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About

Email, collaboration, groupware, and content management - up and running in minutes, on your own hardware, or in the cloud. Citadel is easy, versatile, and powerful, thanks to its exclusive room-based architecture. No other platform seamlessly combines so many different features using this familiar and consistent metaphor. Citadel is 100% open source software using the GNU General Public License. It's not a crippled, cut-down version of some expensive "enterprise" edition. The software you download here is the very best available, and it's all free software.

About

The right way to build your mail server with open source softwares. Works on CentOS Stream, Rocky, Alma, Debian, Ubuntu, FreeBSD, OpenBSD. With iRedMail, you can deploy an OPEN SOURCE, FULLY FLEDGED, FULL-FEATURED mail server in several minutes, for free. We did the heavy lifting of putting all the open source components together and applying best practices. Our product does all the major tasks for you. Furthermore we offer professional support to back you up in case you have some problems. You have all personal data on your own hard disk, you can control the email security, inspect transaction log. No other organization can see the content of all messages. All components used in iRedMail are open source softwares, and you get the bug fixes and updates from the Linux/BSD venders you trust. iRedMail is the right way to build your mail server with open source softwares.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Businesses needing a powerful Mail Server solution

Audience

Anyone interested in a powerful open source mail server

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Citadel
www.citadel.org

Company Information

iRedMail
Founded: 2007
www.iredmail.org

Alternatives

Citadel Team

Citadel Team

Thales SIX GTS

Alternatives

Axigen

Axigen

Axigen Messaging
Courier

Courier

Double Precision, Inc.
Courier

Courier

Double Precision, Inc.

Categories

Mail Servers Supported

Categories

Mail Servers Supported

Integrations

Ubuntu Supported
AWS Marketplace Not Supported
AlmaLinux Not Supported
Azure Marketplace Not Supported
CentOS Not Supported
Debian Not Supported
Docker Supported
FreeBSD Not Supported
Muraena Supported
OpenBSD Not Supported
Rocky Linux Not Supported

Integrations

Ubuntu Supported
AWS Marketplace Supported
AlmaLinux Supported
Azure Marketplace Supported
CentOS Supported
Debian Supported
Docker Not Supported
FreeBSD Supported
Muraena Not Supported
OpenBSD Supported
Rocky Linux Supported
Claim Citadel and update features and information
Claim Citadel and update features and information
Claim iRedMail and update features and information
Claim iRedMail and update features and information