A user manual of Export Tool for Mozilla Thunderbird

How to convert Thunderbird messages and contacts to PST files and switch to using MS Outlook.

Introduction

What does it mean to "migrate from Thunderbird to Outlook" or "switch to using Outlook"?

In this context, the terms switching or migrating to Outlook mean that all of the important data stored in the Thunderbird database would be converted to PST/OST files (a file format used in Outlook). The created files would then be attached to the Outlook profile, and mail accounts would be created in Outlook, with the same settings the accounts had in Thunderbird. Every Outlook account would be tied to a PST (for POP3) or OST (for IMAP) file that was created previously, which would contain messages and address books from that account. Once the migration process is completed, you can use Outlook instead of Thunderbird.

What does it mean to "export Thunderbird data to PST file(s)"?

When you export Thunderbird data to the Outlook format, the emails and/or contacts stored in Thunderbird folders are converted to (one or several) PST files. As an option, PST files can be attached to an Outlook profile. You can use these files for transfering to a different computer, e.g. like a backup copy; or for the files to be viewed in the Outlook program. You can export the data from all Thunderbird accounts to a single one PST file, or create separate PST files for each account.

How to switch to using Outlook instead of Thunderbird

  1. Download and install Export Tool for Mozilla Thunderbird software.

  2. Close Thunderbird and Outlook programs and launch Export Tool. Once the program starts, a dialog box Open Thunderbird Profile will appear. Select the Thunderbird profile from which you want to transfer the data to Outlook, and click Open. Wait for the program to process the data of the selected profile.

    selection of a standard Thunderbird profile

    If you are using Thunderbird Portable, click Open profile of Thunderbird Portable, select the folder where you installed Thunderbird Portable, and click Open. Wait for the program to process the data.

    selection of a Thunderbird Portable profile
  3. By default, all Thunderbird accounts and address books will be transferred to Outlook. You can cancel the transfer of any account or address book by unchecking a box next to the name of an account or address book. To begin the data transfer to Outlook, click Export to PST file.

    'Export to PST file' button
  4. Click Export each Thunderbird email account to a separate PST file. Select a folder on the hard drive where you want to save the generated PST files. Check the boxes next to Attach the generated PST files to the default Outlook profile and Create POP3/IMAP email accounts in Outlook.

    migration settings

    Click the Export button to start. Wait for the data export process from Thunderbird to Outlook to finish.

    Important note!

    • For the POP accounts, the files will be created in the PST format. These PST files will be saved to a folder you selected. The messages stored in the local Thunderbird folders will be copied to the generated PST files.
    • For the IMAP accounts, The files will be created in the OST format. These OST files will be located in the folder Outlook uses for storing PST/OST files. Typically, it is in "C:\Users\user\Documents\Outlook Files\". The messages stored in the local Thunderbird folders (local cache) WILL NOT be copied to the generated OST files. Instead, they will be downloaded from the server during the first synchronization.
    • Address books. If the Thunderbird account is a POP account by default, the address books will be copied to a PST file generated for that account. If the Thunderbird account is an IMAP account by default, the address books will be copied to a separate PST file titled "All Address Books.pst".
  5. Close Export Tool and launch Outlook. Type in the passwords for the mail accounts created in Outlook. IMAP accounts require synchronization, which may take a little while.

    Thunderbird data in Outlook

Watch the video

How to migrate from Thunderbird to Outlook

How to export Thunderbird data to PST file(s)

  1. Download and install Export Tool for Mozilla Thunderbird software.

  2. Close Thunderbird and Outlook programs and launch Export Tool. Once the program starts, a dialog box Open Thunderbird Profile will appear. Select the Thunderbird profile from which you want to export the data to PST file(s), and click Open. Wait for the program to process the data of the selected profile.

    selecting a standard Thunderbird profile

    If you are using Thunderbird Portable, click Open profile of Thunderbird Portable, select the folder where you installed Thunderbird Portable, and click Open. Wait for the program to process the data.

    selecting the Thunderbird Portable profile
  3. By default, all Thunderbird accounts and address books will be exported to PST files. You can cancel the export of any account or address book by unchecking the box next to the name of an account or address book. To begin the data transfer, click Export to PST file.

    'Export to PST file' button
  4. You can export the messages from each Thunderbird account to a separate PST file. In this scenario, the contacts and contact lists will be exported to the PST file generated for the default Thunderbird account. Alternatively, you can export the messages and address books from all Thunderbird accounts to a single PST file.

    To export each Thunderbird account to a separate PST file:

    Click Export each Thunderbird email account to a separate PST file. Select a folder on the hard drive where you would like to save the generated PST files. If you want to attach the PST files to an Outlook profile, check the box next to Attach the generated PST files to the default Outlook profile. Click Export.

    settings for exporting to separate PST files

    To export all Thunderbird accounts to a single PST file:

    Click Export all Thunderbird email accounts to a single PST file. Specify the name of the PST file. If you want to attach the PST file to an Outlook profile, check the box next to Attach the generated PST file to the default Outlook profile. Click Export.

    settings for exporting to a single PST file

Watch the video

How to export Thunderbird messages to PST files
How to export Thunderbird contacts to PST files