SOGo is a fully supported and trusted groupware server with a focus on scalability and open standards.
SOGo is released under the GNU GPL/LGPL v2 and above.
What is Sogo?
SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV, as well as Microsoft ActiveSync.
SOGo is the missing component of your infrastructure; it sits in the middle of your servers to offer your users a uniform and complete interface to access their information. It has been deployed in production environments where thousands of users are involved.
Microsoft Outlook and ActiveSync
SOGo provides native Microsoft ActiveSync support. Mobile devices such as Apple iPhone, Android, and Windows Phone can fully synchronize emails, contacts, events and tasks with SOGo.
SOGo offers Microsoft Outlook compatibility using the Outlook CalDav Synchronizer.
Setting up your Vacation Autoresponder
Features
Localized
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.
Sharing
Share your mail, calendars and address books with other users. Define specific rights to each person or group of persons.
Two-Factor Authentication (2FA)
Protect your account from unauthorized access using an Authenticator app.
Single Sign-On
Single sign-on (SSO) capabilities using CAS, WebAuth or Kerberos.
Forward and Auto-Reply
Set an auto reply while on vacation or forward all your incoming mail to one ore many alternate email addresses.
Export/Import
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.
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.
Reminders
Set alarms to important events and get alerted directly from your browser.
Recurring Events
Define precise recurrence pattern for your repeating events and create exceptions if necessary.
Find out more here.