How to Migrate from Thunderbird to Outlook

Wendy Hawkins | Modified: 2020-10-17T12:29:54+00:00 | How to, Tech News|

Mozilla Thunderbird mail clients migrate from Thunderbird to Outlook for reasons like security, adaptability, accessibility, collaboration, and moderate membership-based evaluating.

In any case, move emails from Thunderbird to Outlook or some other email client alongside attachments isn’t a simple task. Initially, Outlook doesn’t uphold the MBOX file type that is used in Thunderbird for storing mailboxes including emails, attachments, contacts, calendars, and so on. Thus, migrating Thunderbird mailboxes to Outlook would initially require converting over all the data into an upheld format, i.e., Personal Storage Table (PST).

There are a few techniques accessible to move Thunderbird to Outlook. In this blog, we will examine them in detail.

Techniques to Migrate from Thunderbird to Outlook

As referenced previously, there are a few techniques for convert. Let’s examine them quickly:

Technique 1: Move EML Files From Thunderbird to Outlook

Step 1: Move Thunderbird Emails to Windows PC

  1. Most importantly, make another folder on Desktop.
  2. Next, dispatch the Thunderbird application on the framework.
  3. From that point forward, open the message folder where the emails that should be migrate from Thunderbird to Outlook are saved.
  4. At that point, select all emails.
  5. Next, Right-click on the emails and select Save As option.
  6. At that point, browse to the folder location and save the emails there.

Step 2: Import Thunderbird to Outlook

  1. Dispatch the Outlook email application.
  2. At that point, go to the folder in Outlook where the Thunderbird emails will be saved.
  3. Or on the other hand, select the Folder tab and select the New Folder option.
  4. In the Create New folder exchange box, set a name for the new folder.
  5. Next, click on the OK option to migrate from Thunderbird to Outlook
  6. Next, click on the Folder to open its content
  7. At long last, drag all the emails from the Desktop folder to this folder in Outlook, and your data will be relocated effectively.

Technique 2: Forward as Attachments

  1. Open Mozilla Thunderbird on a Windows PC.
  2. At that point, select the emails that should be import Thunderbird to Outlook account.
  3. Next, right-click on them and select Forward as Attachment.
  4. This will open another email window where emails with be included as EML attachments.
  5. Next, type in an email ID to migrate from Thunderbird to Outlook.
  6. At that point, click on the Send button.
  7. At long last, see the Thunderbird emails on Outlook Mail App.
  8. Check the process by signing into Outlook

Limitations of this methodology

  • Relocates Limited Emails: The procedure to move Thunderbird emails to Exchange Online isn’t intended to move the total email folder containing more than 1000 emails. It can just export the set number of conversations.
  • Long and Time-Consuming: It would take a great deal of effort to move each email to the folder location and afterward to Outlook. Sending several Thunderbird emails to Outlook with huge attachments files may take a great deal of time.
  • Data Integrity Compromised: Often email configuration or SMTP header is changed for certain emails during transfer.

Effective way to Migrate from Thunderbird to Outlook

The above talked strategies to move Thunderbird email to Outlook would not be appropriate for migrating a lot of emails, attachments, contacts, and so on. It’s smarter to used an expert tool that spends significant time in sending Thunderbird mailbox data to Outlook.
Thunderbird Backup tool is one of the most-favored tools broadly used for moving mailboxes from Thunderbird and other MBOX-based email clients to Outlook. Also, this Thunderbird Backup tool can migrate from Thunderbird to Outlook and other email clients.

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Steps: How to transfer from thunderbird to outlook

Download and Run Thunderbird Backup Tool.

thunderbird-converter tool

Click on the Add File option.


Select Mozilla Thunderbird as an email application.

default profile to move thunderbird

Select identity which you need to migrate.

add-pst-file to transfer thunderbird to Outlook

Preview and select folders to export Thunderbird to Outlook.

preview attachments to export thunderbird to Outlook

Finally, select PST file format and click on the Export button.

export thunderbird to Outlook all folder

Now, you are done with exporting Thunderbird mailbox folders to PST file format. Now, import the PST file to Outlook by using the Outlook Import/Export wizard.

Wrapping it up

Thunderbird store all the mailbox data in MBOX file format, which is not upheld by Outlook. So, you have to initially convert the MBOX file into a viable format, for example, PST or EML. In this blog, we sketched out both manual and tool-based strategies to migrate from Thunderbird to Outlook, all of which work fine from a specialized angle, which means, they do convert Thunderbird MBOX files to enable migration of mailboxes to Outlook.
But, for every pragmatic reason—wherein high volume and an assortment of mailbox data are concerned—the tool ought to be used. Why? Since as a business or an individual client who wouldn’t have any desire to burn through time or get bothered performing out the manual strategies while storing mailbox data in danger of losing data. Therefore, use Thunderbird Backup tool, complete the task with high accuracy and data integrity.

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