SysTools OST Splitter

The more email messages you receive or send, the larger your Outlook mailbox will be. An oversized mailbox takes longer to load, no matter the mail client you are using. What’s more, most email providers limit the size of the mailbox so it is quite important to make sure the size of your mailbox stays within limits.

Aside from deleting messages and folders manually, you can use third party applications to shrink your mailbox. In case you are using Outlook, it is possible to reduce the size of the generated OST files with the SysTools OST Splitter.

The application is intuitive so using it should not pose any difficulty to anyone. It can handle individual OST files but it also comes with batch processing capabilities, meaning it can help you split multiple files in one go.

Basically, all you have to do is choose the location of the OST files you want it to shrink or select the paths of the folders that contain them. And, if you are not sure or just don’t want to search for the location of the Outlook mailbox, you can simply let SysTools OST Splitter to search for OST files in the folders where Outlook usually stores them.

With a bit of effort, you can put together the list of files to process and, after choosing the output directory, you can proceed to configuring the application’s options.

SysTools OST Splitter reads the content of all the selected OST files, allowing you to browse personal folders in the mailbox, the inbox, the outbox and the list of sent items, calendar entries and contacts, the journal, notes and tasks, and so on. Practically, you get to see everything that is included in the selected OST file.

There are multiple splitting criteria you can opt for. SysTools OST Splitter enables you to split by size, date, year, by folder, the email ID or the category. Moreover, it is possible to specify the size of a piece in MB. The minimum split size is 1 MB, while the maximum is 1 TB.

SysTools OST Splitter is a straightforward application with a single mission: to help you split oversized OST files created by Outlook. With its help, you can easily reduce the size of your mailbox and save the output as multiple PST files.