How to Export Claws Mail to PST Outlook? Transfer Emails Easily

Written By Chirag Arora
Anuraag Singh
Approved By Anuraag Singh  
Published On July 27th, 2022
Reading Time 5 Minutes Reading

Want to Convert Claws mail to PST file? Here, find the most efficient approach to export emails and attachments from Claws Mail into Outlook readable format. The provided method will generate loss-free & accurate UNICODE PST file supported by Outlook 2019, 2016, 2013 and all below versions.

About Claws Mail: Available for free on Linux and Windows, Claws Mail is an open-source desktop email client. Although it is less slick when compared to rivals like Thunderbird, it makes up for it with fast processing and stability. The presence of a sophisticated interface and feature extensibility via plugins further adds to the high set of functions it already possesses.

Why Need of Claws Mail to Outlook Conversion?

Although the Claws Mail email client works well for individuals, it is not suitable for professionals and incorporates. It faces some performance issues and lacks advanced security features. On the other hand, Outlook comes laced with a better range of functionalities centered around increasing the productivity and security of email management. It is suitable for both small-scale and large-scale organizations as well as for individuals looking for a powerful and secure email client.

Before moving onto the conversion make sure to export the Claws emails into local system. It will be required for processing later on.

  • Run Claws mail and click File, select Export to Mbox file.

export to mbox

  • Click the Browse button to select the source folder.

source folder

  • Select the folder you want to export and click the OK button.

ok button

  • Click on the next Browse button to select the destination location.

mbox file

  • Click on Ok button to successfully export Claws Mail to MBOX files.


How do I Convert Emails of Claws Mail to PST format?

For such migration, there are some important points that a user must be aware of:

  • Claws Mail does not have any feature to export emails to Outlook PST.
  • The only export function it carries is saving the emails and attachments as MBOX file.
  • You can even locate the Claws Mail MBOX file on Windows at its default location:
  • C:\Documents and Settings\Administrator\Application Data\Mail\{mailbox}
  • MS Outlook stores its data in PST format. Hence, there is a requirement to convert the Claws Mail .mbox data file into a readable format of Outlook i.e., PST.

Considering their vital points, its safe to say that no official method exists that can export data from Claws Mail to Outlook. Hence, there is a need for some alternate approaches that can be trustworthy. That is where SysTools MBOX to PST Converter comes into play. With protocols that focus on accuracy and efficiency, it is one of the most powerful conversion tools among its counterparts.

Free Download Purchase Now

Some benefits associated with this tool are:

  • It ensures the conversion of both emails and attachments without data loss.
  • The original positioning of inline images, files, etc is maintained.
  • There are no changes in formatting, header information, or message content.
  • Supports both single or bulk Claws Mail to PST conversion.
  • Provides the option to export only selected emails/files.
  • Zero limitations on Claws Mail files or file-size.
  • Generates UNICODE PST file compatible with all Outlook editions: Outlook 2019, 2016, 2013 & lower version.

A free trial version of the software is also available for users to work with. It will clear any doubts about the tool capabilities during conversion.

Steps to Export Claws Mail to Outlook PST

  • Step 1: Download & Install Claws to Outlook Converter.
  • Step 2: Add orphan Claws mailbox files
  • Step 3: Preview emails before Claws to PST conversion with attachments.
  • Step 4: Choose Saving Location & Export Claws Mail to Outlook.

The above steps are just a brief introduction to the steps. If you want detailed instructions on how the tool works, find them below:

  • Download and run the software application and go to Add File -> Next

add file

  • Now, select the MBOX file for Claws Mail to PST Conversion and click on Process button


  • View all Claws Mail emails and attachments. Here, click the top-left menu Export button

normal view

  • Now set the option to Export All Folders for complete email migration. For selective file conversion, you can go for Export Selected Folders option

export all file

  • Afterward, choose PST as the export file format from the given list


  • Also, set the destination folder where you want to save the PST file with Change button

export change

  • Finally, hitting the Export button will start the process of exporting Claws Mail to Outlook data file.

export change

For Mac Users: The mentioned software is also available for Mac OS as Mac MBOX Converter

Import the Output PST in MS Outlook

  1. Open MS Outlook application on your Windows system
  2. Now, navigate to File and select Open and Export
  3. Here, go to Import/Export Wizard and choose the Import from another program or file option
  4. Next, opt the Outlook data file(.pst) option
  5. Next, browse and select the converted Claws Mail PST file
  6. Choose Import items into current folder radio button and click Finish

Now you can access all your emails and attachments from Claws Mail to Outlook platform without any real effort.


The article revolves around an email migration scenario involving a free open source Claws Mail and the widely appreciated and powerful MS Outlook application. Simply, follow the given procedure and convert Claws Mail to PST format without any data loss.

This article is also applicable to Claws mail of OS other than Windows such as Linux-Unix-Ubuntu mailbox to PST.


By Chirag Arora

Having around 9+ years of experience in technical writing. Knows about the core technical areas. Also, provides easy and reliable solutions to resolve difficulties faced by users while working with different platforms.