SeaMonkey is an open-source desktop-based email client application driven by a community of developers. It supports multiple accounts, junk mail folders, message filters, address book, and other sophisticated features. Although, SeaMonkey is an obsolete email program because of the absence of any new versions since its introduction.
Nowadays, users want to work with advanced and upgraded technology, for this reason, they are shifting to another compatible platforms like Microsoft Outlook. To utilize your essential data in Outlook email client, you need to convert SeaMonkey's MBOX files into PST format that is compatible with it. Let’s get started to convert emails from SeaMonkey to Outlook PST.
To convert SeaMonkey emails to Outlook PST for free, you must have SeaMonkey and Thunderbird, and Outlook installed in your system. You will need to follow 3 stages as given below:
At the very first, you need to save SeaMonkey emails locally so that you can import it in Thunderbird. Here are the steps to follow:
The selected emails will be saved in the MBOX format at the specified location.
You know Outlook doesn't support MBOX files. Now you need to import the MBOX file in the Thunderbird, so that you can save each SeaMonkey email in EML format. Here are the steps to import MBOX into Thunderbird:
Now you need to import all your EML files in Outlook. However, you can use New Outlook or Classic Outlook to do so. Once done, export all email to PST file. Here are the steps to follow:
Note: You can use drag and drop or Import wizard in the new Outlook.
Once you save all your SeaMonkey email to PST, you can import any time in Outlook or Microsoft 365.
A few limitations of the manual method are:
However, the MBOX to PST conversion can be a complex task for users due to the unavailability of direct methods. Therefore, using a professional Kernel for MBOX to PST converter tool is the best approach for this conversion. It is a user-friendly tool that converts multiple files with absolute precision.




Despite offering a wide range of features, SeaMonkey email client lacks new updates from its development team. As a result, its users are continuously shifting towards more reliable email clients such as Outlook. We hope you now know both manual and professional solutions to convert emails from SeaMonkey to Outlook PST. Therefore, we have also discussed a reliable solution, i.e., Kernel for MBOX to PST, which makes this transition process smooth and convenient. Moreover, it allows users to convert MBOX files into different formats such as PST, EML, DBX, MSG and more.