SOGo provides all features required by organizations to satisfy their increasing and demanding user base.

Web Interface


SOGo is available in over a dozen languages so you'll always feel at home. If your language is missing, you can easily contribute to the project and submit your translation.


Move messages to folders, drag contacts to address books, and modify events time and duration from the tip of your finger. Just like a desktop app.


Set alarms to important events and get alerted directly from your browser.


Delegate access to your mail account or delegate an invitation to another person.

Resource Reservation

Define resources like projectors and conference rooms to automatically accept invitations for them while avoiding double-booking.


Compose HTML mail with the complete inline rich-text editor [External].

Mail Return Receipt

Request or answer to return requests to confirm the arrival of messages.

Forward and Auto-Reply

Set an auto reply while on vacation or forward all your incoming mail to one ore many alternate email addresses.


Single sign-on capabilities using CAS, WebAuth or Kerberos.


Share your mail, calendars and address books with other users. Define specific rights to each person or group of persons.

Recurring Events

Define precise recurrence pattern for your repeating events and create exceptions if necessary.

Free/Busy Time

Before sending an invitation, see the free/busy periods of attendees, either from the local SOGo server or a remote Microsoft Exchange server. Automatically set off-hours as busy if you like.


Receive an mail — or send an email to someone — whenever one of your calendars is modified, and alert affected users of new access rights.


Choose from a predefined set of categories or create your own categories and associate them to your events and contacts.

Multiple Mail Accounts

Configure all your mail accounts (IMAP) from SOGo and forget about login-in to multiple webmail services.

Mail Filtering

Define powerful server-side filters to automatically act on new messages. Forward, discard, reject, flag or move incoming mail depending on complex criteria.


Export calendars or import events from a vCalendar file. Export contacts to LDIF or import cards from a LDIF of vCard file. Export a mailbox to zip archive.

Password Policy

Define a variety of password control mechanisms, including password aging, account time-outs, mandatory password resets, acceptable password content, and even grace logins.

Native Clients

Desktop Clients

SOGo provides perfect integration with desktop clients such as :

  • Mozilla Thunderbird - considered as the favored client to use with SOGo due to its tight integration using the SOGo Connector and Integrator extensions. With Thunderbird, one can easily share address books, calendars and emails with other SOGo users - all this due standard protocols such as CalDAV and CardDAV provided by SOGo
  • Microsoft Outlook - using the OpenChange connector developed by Inverse, Microsoft Outlook users can share address books, calendars and emails with other SOGo users without relying on costly MAPI providers. The connectivity between Microsoft Outlook and SOGo is native as SOGo will act as a fully featured Microsoft Exchange server to Microsoft Outlook clients
  • Apple iCal and AddressBook - much like with Mozilla Thunderbird, Apple applications can benefit from SOGo's address books and calendars sharing capabilities with any other SOGo users
  • ActiveSync compatible devices - using the ActiveSync bundle developed by Inverse, any device that speaks ActiveSync can easily synchronized mails, calendars and addressbooks. Apple iOS, Android, Windows Phone, Blackberry 10, and Outlook 2013 all natively support ActiveSync.

Mobile Devices

With SOGo, data access goes beyond the Web and native interfaces. SOGo supports virtually every mobile devices such as :

  • Apple iPhone/iPad and BlackBerry 10 devices are supported natively through the use of the CalDAV and CardDAV protocols, which are well supported by SOGo
  • Windows Phone and Android devices can speak ActiveSync, which SOGo supports since version 2.2.0


Packages for your Linux Distro

Easily deploy SOGo by using provided standard operating system packages or by using the Zero Effort Groupware (ZEG) Appliance.

Components reusability

SOGo uses existing IMAP, SMTP, database and LDAP services. When not available, best breed ones can be used from the Open Source community such as Cyrus IMAP Server, Dovecot, OpenLDAP, Postfix, MySQL and PostgreSQL.


SOGo offers DAV access to everything - calendars, addess books and even mails. This makes the application very scriptable and interoperable with third party applications.

Domain Segregation

Isolate users into domains, all from a single SOGo server.


Ease of maintenance, evolution and customization using a templates-driven approach.


SOGo is scalable to handle from a handful to hundreds of thousands of users. SOGo's architecture is perfectly horizontal so more servers can be easily added to handle the growth.


Support and compliance with collaboration-oriented standards such as CalDAV, CardDAV, IMAP ACL and more. SOGo supports the popular Microsoft Exchange ActiveSync protocol.

Multiple Authentication Sources

Set as many authentication sources as you need, from either a LDAP repository or a SQL database.


SOGo uses memcached [External] to cache results of your authentication sources and storage database, lightning the load on the resources.

Webmin Plugin

Easy-to-use Web-based configuration tool using Webmin [External] and its SOGo plugin.



The SOGo solution is well supported by a large community and by Inverse [External], which provides commercial support to clients all around the world. Extensive documentation is available as well as a FAQ for popular questions.