Sylpheed is an open-source email client that progressively runs on Mac, Linux, and Windows compliant systems. With stunning features and easy configuration requisites, Sylpheed can be considered a modern-day email client. It also provides features like spam filtering, password protection, and message encryption to maintain the security and integrity of data. With the availability of an intuitive user interface, Sylpheed can be perfectly handled by the user of any category, whether tech or non-tech. To support the file format, Sylpheed uses GTK+GUI tool kit, and the default format for storing emails and attachments is MBOX (with no extension).

Some features that make Sylpheed suitable are:

  • Sophisticated level of search and filtration
  • Junk mail optimization
  • Supports major protocols like POP3, SMTP, IMAP, NTTP, and others

If we compare Sylpheed to advanced platforms like Outlook, a user can easily determine the limitations of emailing functionalities and security features. Moreover, many individual professionals and organizations all over the globe prefer Outlook over other email clients. If any user is willing to migrate emails and attachments of Sylpheed to Outlook, then an advanced migration tool is required because both platforms don’t facilitate any direct conversion methods.

Effortlessly migrate mails and attachments of Sylpheed to Outlook-

Kernel for MBOX to PST is specially designed to perform the conversion of Sylpheed MBOX to Outlook PST format. Apart from its prime function, it does provide other benefits which prove to be helpful for all the users-

  • The data’s integrity is maintained till the last step.
  • It is a safe and secure platform where users do not have to worry about the confidentiality of their data.
  • The tool supports many MBOX email clients like Sylpheed, Thunderbird, PocoMail, Eudora, Apple Mail,
  • The mailbox items can be saved into PST, DBX, EML or MSG file formats.
  • There are various filters available which help to narrow down the search.
  • Compatible with all the versions of MS Outlook.
  1. Launch the KernelApps software on your system.
  2. Click on the Browse button to locate the Sylpheed MBOX folder. You can choose between the Select Folder and Select File option depending on the number of files. Browse Sylpheed MBOX folder
  3. Select the required folder, add click on the Finish button. Add Sylpheed files
  4. The tool will process the selected MBOX files and you will get a preview of the mailbox data. The left-side of the interface represents the mailbox folders. You can click those items individually to display its contents. Once done, click the Save button to proceed. Preview of MBOX file
  5. To convert the files in PST, select the output format as PST file (MS Outlook) and click Next. Select PST as a saving file format
  6. Apply filters to save specify data; for instance, you can use options like From, To, Subject, Folder Name, Item Type, and Date Range. Click Next once you are done filtering the data. Apply filter option
  7. For huge files, you can use the Split option available in the next window. The drop-down menu of the Split option gives you plenty of choices for splitting the file. Also, you can add a Prefix to the file name to give it a unique identity. This window is optional so you can skip this one in case you don’t want to make any changes. Click Next. Opt for the Split option and select prefix
  8. Specify a destination path for saving the converted file through the Browse button. Then, click Finish to execute. Provide location to save PST file
  9. You will get a notification regarding the successful completion of the conversion task. Click OK to exit. Sylpheed to PST conversion done


Since Outlook is used by a wider audience, there arises a need to migrate emails and attachments of Sylpheed to Outlook. Both the platforms use extremely different file formats- MBOX for Sylpheed while PST for Outlook. To begin with, the conversion begins with exporting MBOX file to PST file. This is a critical task that has to be handled with care.