Thunderbird to Outlook Migration Using 2 Free Methods

Thunderbird to Outlook Migration Using 2 Free Methods

Nov 15, 2021, 1:19:30 PM Tech and Science

This is a guide for all those people who want to migrate from Mozilla Thunderbird to Outlook. It contains the two most effective manual methods which are completely free of cost.

Small Intro: Mozilla Thunderbird and MS Outlook are the two most commonly used desktop email clients. Both of them allow users to configure and work with multiple email accounts at once. In recent years, there has been an exponential increase in users migrating from Thunderbird email client to MS Outlook. Considering the fact that Thunderbird is a free application while Outlook is paid, this migration sure comes as a surprise. But is it? Once you actually start including the various advantages that Outlook has over Thunderbird, migration starts sounding more practical.

But we are not here to talk about that. The more pressing problem at hand is how to go about this migration. I mean try the free manual methods that appear in web searches or simply go for a professional tool for faster conversion. Actually, all of this is directly related to your requirements.

In case of an emergency, the software is the way to go. If you have time at hand and do not want to pay, you can always go for the manual methods.

Simple and Free Method for Thunderbird to Outlook Migration

Out of all the solutions available online, only two are actually good enough for consideration. Rest methods are either outdated or riddled with multiple issues. The two effective manual Thunderbird to Outlook migration ways are:

  1. Making use of IMAP synchronization features
  2. By Importing/Exporting EML files

Let us start with the first method.

Do you know these methods are the same as free ways to convert MBOX to PST since Thunderbird also uses MBOX files to store data.

Method I: Free IMAP Technique

  • First, create a new Gmail account.
  • Now, configure this account in your Mozilla Thunderbird email client using IMAP
  • (Do keep the 2-way synchronization in mind)
  • Once the account is configured, open the mailbox which contains email messages you want to export
  • Copy all these emails to the recently configured Gmail account
  • Open the Gmail account in a web browser to check if all messages are present or not
  • (If not, try making a new folder in Gmail, and then copy emails.)
  • Once everything is imported in Gmail, launch the MS Outlook client
  • Now configure the same Gmail account in Outlook with IMAP
  • Wait for synchronization, then move all the emails from the Gmail folder to a new folder in Outlook
  • There you have it. All Thunderbird emails are accessible in the Outlook client.


Method II: Import/ Export EML Files

We will take advantage of the fact that both Mozilla Thunderbird & MS Outlook view EML files as email messages. Carry out the following steps for successful Thunderbird to Outlook migration:

  1. Launch Mozilla Thunderbird email client.
  2. Open the mailbox folder containing emails that you want to export to Outlook.
  3. Select all the emails or only required ones as per preference.
  4. Now, right-click on any of the selected emails and click on the Save As option.
  5. Next, save them in a folder where you will have easy access to these emails.
  6. The email messages will be saved in EML format.
  7. Now start the Microsoft Outlook email application.
  8. Create a new folder and open it. No content will be shown since it’s an empty folder.
  9. Keeping it open, go to the storage location where all the EML files are saved.
  10. Now select all these files, drag and drop them into the center of the MS Outlook interface
  11. Since the new folder was open, all the EML files will be imported into it
  12. Wait for the process completion and that’s it..!! All emails successfully migrated to Outlook.

Going by the steps displayed in both these methods, you can say that it's lengthy and time-consuming. But these 2 methods are truly effective when used for a small number of emails.

Note: In case you want to use a professional solution for faster and accurate bulk conversion, you can try this MBOX Converter Wizard.

Hopefully, the discussed solutions will help you gain easy Thunderbird to Outlook migration!!



Published by Stephen Renald

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