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BlueMind is proud to announce the release of its latest Collaborative open-source email suite. This long-awaited version 4 offers exclusive, transparent, Outlook-compatible support to businesses and public administration organisations who can now reconcile sovereignty and user satisfaction

Only this new version is capable of fully supporting Outlook MAPI mode with no loss of functionality, while enriching collaboration with other clients such as Thunderbird, web or mobile applications. Find out all about it below, as well as about other improvements and new features which is the result of several years' work

Nouveautés 4.1

Pièces jointes aux événements d'agenda, y compris dans Outlook
Suppression d'une PJ d'un email
Dossiers sous la boîte de réception
Rappels de type notification
Amélioration de la synchronisation des calendriers esternes
Patron de contenu des ressources
Signatures sur des entités
Stockage object store comptaible openstack
Améliorations techniques pour le fonctionnement de la réplication et de MAPI


Unquestionably BlueMind's most eagerly awaited feature: comprehensive connector-free Outlook support.

For more information about implementing MAPI support, go to the dedicated BlueMind documentation page: Implementing MAPI for Outlook

For more information about supported Outlook versions and known limitations, please refer to our Compatibility page.

And check out our version notes for more detailed information.

Inbox sub-folders

In earlier versions of BlueMind (4.0.x), folders created under the inbox by Outlook were not mail folders but virtual folders. BlueMind 4.1 brings inbox sub-folder support.

Updates from 4.0.x to 4.1

Warning: when updating from BlueMind 4.0.x to 4.1, virtual folders are not migrated and will be deleted.

To prevent this, you can move these virtual folders outside the inbox before the update and then return them to the inbox where they will be created again as mail folders.

Event attachments

Just like in the BlueMind calendar (see below), BlueMind 4.1 allows Outlook users to attach files to calendar events, which will be visible in BlueMind and from all meeting participants.

Attaching an email to another email

A new useful Outlook feature allows users to drag and drop an email message from the inbox into a message compose window. The message is then simply added as an attachment to the new message without having to go through a mail forward or an export/add procedure.

Removing message attachments

This feature is very useful in reducing the size of mailboxes and organizing mail is now available in 4.1: users can remove email attachments while keeping the message.

Technical and performance improvements

Great effort has been put into software corrections and general performance improvements as well as the support of some Outlook features. In particular, mail filters and distribution lists have improved significantly. 

Agenda message

Event attachments

One of our users' top suggestions – being able to attach files to calendar events – is finally possible with BlueMind's version 4.1!

Find out more about this feature in our page dedicated to calendar events.

Event reminder improvements

Improvements have been made to how event reminders work. Users can customize the type of alert they prefer – an email message or a desktop notification:

Reminders can still be repeated and users can set different reminder types. To find out more, please go to our page on events.

External calendar synchronization

External calendars' synchronization and refresh has ben entirely overhauled in 4.1 to:

  • Improve performance and make it possible to synch a large number of external calendars
  • Enable almost real-time display of external calendars

This overhaul is transparent to users – the interface is unchanged – but it has significant effects: calendars are now refreshed on demand, every time they are displayed in the Calendar application. There is no more need to wait for the auto synch which used to be every hours. Changes made in the third-party app can be seen as soon as the user views the calendar – give or take possible lag due to server load (e.g. a long queue) or server communication (network quality).

Users can still force synch in the Calendar management page.

Resource contents templates

This feature, already available since BlueMind 3.5.13, has been carried over to BlueMind 4.1. Administrators can now set event description templates. When a resource is invited to an event, the template will be inserted into the event's description automatically. These templates can contain variables and be set in different languages to fit the meeting organizer's.

To find out more, please go to our page on resources in the Administrator's Guide.

Corporate signatures 

A new option gives users the possibility to refine corporate signature settings: in addition to choosing groups, users can now set a signature for one or several selected entities.


Data handling

To support a greater number of users, BlueMind 4:

  • keeps central directory data and user data separate
  • can have several backend servers defined for user data

To find out more about setting this up, please refer to our dedicated page: Multi-backend installation.

Separate directory and user data

BlueMind 4 keeps directory data (users, groups, etc.) separate from user data.

One database is dedicated to directory data. User data is stored in one or several other databases located on storage servers.

After the authentication phase which uses the directory database, users essentially communicate with their storage server.

User data storage

With BlueMind 3.5, you were able to distribute user mailboxes over several servers.

BlueMind 4 goes even further by enabling you to distribute calendar, address book etc. data on several servers.

All the data for one user (emails, calendars, contacts, etc.) is now stored on the same data storage server.


Fully automatic archiving

Archiving is now completely automatic. 

This makes archiving transparent for users who no longer have to archive manually and the icon for archived messages or the message archiving/dearchiving button – as in previous versions - are gone.

Users no longer have any tedious tasks to perform to lighten their storage load.

Compatible with all email clients

Archiving no longer require a client plugin. It is entirely managed transparently, on the server side.

Archiving works with all email clients (webmail, thick or mobile): whatever the IMAP client, all emails are archived and can be viewed.

To find out more, go to the page: Archiving


BlueMind 4 adds a new email handling brick to the API REST, which you can find out about in our API documentation.

For additional support with add-on or script maintenance, this page now shows version incompatibilities: you can therefore quickly see if your development requires a modification or a version upgrade.

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