This guide explains how to import emails contained in an archive in MBOX format to an Infomaniak mail address.

Prerequisites

• Have a valid and functional email address with Infomaniak.
• Have an archive of your previous mailbox in .mbox format.

Importing MBOX format emails…

… with Thunderbird

Install Thunderbird and configure the Infomaniak address in IMAP. Then, to add MBOX file import support:

1. Open Thunderbird.
2. Click on the Tools menu.
3. Click on Add-ons and Themes.
4. Search for the ImportExportTools extension:
   
5. Click the button to install the ImportExportTools NG extension.
6. Confirm the addition of the extension to Thunderbird:
   
7. Create a new folder by right-clicking in the local part of your account tree:
   
8. Right-click on this new folder and choose to import a mbox file from the new menu of the ImportExportTools NG extension:
   
9. Select the .mbox file on your hard drive and import it.
10. The import of your emails is done in the local folder.
11. This local folder can be moved to the main tree to be synchronized with the Infomaniak server via IMAP:
    
12. The sending of emails to the server is done and you will find your content if you consult the mailbox from another system, such as the Infomaniak Mail web app (online service ksuite.infomaniak.com/mail) for example (or even Apple Mail or Microsoft Outlook - see below):
    

… with Outlook

There is no free solution to convert a .mbox file to a .pst file for Outlook, for example. However, by following the solution above, which is entirely free, you will get your emails from the .mbox archive to your Infomaniak address.

You can then choose to stop using Thunderbird and continue with Microsoft Outlook in IMAP since all your messages will have been stored on the Infomaniak servers.