How to Save Thunderbird emails in PST format?
We highly recommend MailsDaddy Thunderbird to Outlook Converter tool to move single or multiple Thunderbird emails to Outlook PST format at once.
Email management is a very crucial part of any organization or team because if it is corrupted then we can loss the lead or clients.
Mozilla Thunderbird is one of the most trusted and most usable email clients worldwide. But when user seems to open in other email client like Microsoft Outlook then conversion is required.
Migration from Mozilla Thunderbird to Outlook often require a reliable method to secure all mail and attachments. In this post, we will share manual methodology and automated solution to open emails into Outlook.
Comparing Thunderbird and Outlook
Any user or organization currently using Mozilla Thunderbird and planning to migrate their data to Microsoft Outlook should be aware of the differences between these email clients.
|
Category |
Thunderbird |
Outlook |
|
First Launch |
2003 |
1997 |
|
Developer |
Mozilla Foundation |
Microsoft |
|
Original Purpose |
Lightweight, open-source email client focused on simplicity and user control |
Enterprise-focused personal information manager (email + calendar + tasks) |
|
Platform at Launch |
Windows, Linux |
Windows (part of Microsoft Office) |
|
License Model |
Free & open-source |
Proprietary (paid, part of Office suite) |
|
Core Philosophy |
Privacy, customization, user freedom |
Productivity, integration, enterprise ecosystem |
|
Early Features (2000s) |
POP/IMAP email, spam filtering, extensions |
Email, calendar, contacts, tasks, Exchange integration |
|
Evolution Path |
Slower development for a period (2012–2017), then revived with frequent updates |
Continuous enterprise-driven evolution, cloud-first after 2010s |
|
Cloud Integration |
Limited by default, supports add-ons |
Deep integration with Microsoft 365 (OneDrive, Teams, etc.) |
|
User Interface |
Customizable, traditional desktop UI |
Modern UI with ribbons, evolving web-like interface |
|
Add-ons / Extensions |
Strong extension ecosystem (high flexibility) |
Limited compared to Thunderbird |
|
Security & Privacy |
Strong emphasis (open-source transparency, encryption support) |
Enterprise-grade security, compliance tools |
|
Mobile Support |
Historically weak, improving recently |
Strong (iOS, Android apps) |
|
Target Users (Then) |
Tech-savvy individuals, open-source community |
Businesses, professionals |
Above table explain about the difference and accessibility features of Outlook and Thunderbird.
Manual methodology to Open emails from Thunderbird to Outlook PST
Any method or migration, you opt to migrate your mailbox is generally long way to open data. Similar Thunderbird to PST manual way is also a long process to convert mailbox.
Part 1: Require a webmail client like Gmail to be a mediator that support IMAP.
Part 2: Configure account from Gmail to Mozilla Thunderbird using IMAP.
Part 3: Create a new folder and drag all mail in it.
Part 4: Once synced is completed, setup another account from Gmail to Outlook.
Part 5: Export PST file from Outlook using Import-export option (optional).
Loopholes in Manual way
1. A free Gmail account offers up to 15 GB of storage; therefore, you cannot migrate a mailbox larger than 15 GB at a time.
2. Multiple accounts must be set up individually.
3. A stable internet connection is required, as the entire process operates online.
4. This is a time-consuming process.
5. The installation and configuration of both email clients are necessary.
Third-party tool to Export emails from Thunderbird to Outlook
If you have ever attempted to perform a task manually but were unable to complete it or were dissatisfied with the results third-party tools offer a reliable alternative.
Third-party solutions overcome the challenges associated with manual methods, enabling you to effortlessly open mailboxes in Outlook without any technical complications.
We highly recommend MailsDaddy Thunderbird to Outlook Converter tool to move single or multiple Thunderbird emails to Outlook PST format at once. This single GUI application has embedded with many advance features like preview, bulk migration, email filter conversion, multiple export format etc. User can install the solution in all Windows operating systems and easily convert and open Thunderbird emails to PST.
In addition to PST, the application also convert data from Thunderbird to PDF, EML, MSG, HTML, MHTML and RTF file format.
Steps to Open emails in Outlook from Thunderbird
· Download and install MailsDaddy Thunderbird to Outlook Converter Tool
· Launch the application and click on "Add mailbox" button.
· Click on autoload or browse button to add TB mailbox into the software.
· Click on Export button (preview is optional choice)
· Select all folders and enable PST file for Outlook
· Choose Single or Separate PST option for all Thunderbird profiles.
· Save the destination and click on Export button to start conversion.
To perform conversions using this solution, there is no need for an internet connection or an installed email client. This software comes with a trial edition that exports a limited number of emails from each folder. With the help of this solution, users can also convert filtered and selected data from Thunderbird to Outlook and other platforms.
Conclusion
Both Thunderbird and Outlook are excellent clients for email management; however, the specific needs of any organization depend on its unique requirements and expectations. This post guides users on how to migrate their mailboxes from Thunderbird to PST format using both manual methods and third-party tools. If you have any specific requirements, please let us know by leaving a comment below.
Author Bio
Hi, I’m Somit Vishwakarma, a technical content writer and email migration specialist with hands-on experience in email clients, data conversion, and troubleshooting solutions.
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