Best File Split Software to Split Single File into Multiple Files on Windows


File corruption is a common phenomenon with large mailbox files. Whether its the open-source mailbox format like MBOX, or the proprietary formats like PST, OST and NSF, all these files run the risk of corruption, if oversized.

Oversize file leads to many problems in the supporting email client. For example, an oversized PST leads to problems like Outlook hanging repeatedly, Outlook unable to open PST file, and many more.

To make sure such scenarios don’t play out, it is best to split the file into multiple smaller files. File Split software allows you to easily break a large mail file into smaller files of fixed size.

Advantages of Splitting Mail File


Better Email Client Management - With functions like splitting file as per different criteria like size, date, etc., you can better manage your emails.

Avoid Corruption - If a file gets oversized, its very likely prone to corruption. By breaking the file, you can prevent the file from such risks and thus avoid data-loss due to corruption.

Easily Search Emails - It is easier to search and find emails from a small mailbox than to look for it in a long list of messages.

Increase in Email Client Performance - Large files often lead to performance issues in the corresponding email client. But, after you trim the size of the file, the email client will go back to its original performance speed.

Best Range of File Split Tools


Repository of File Splitting related products built to Split single File into multiple files using File Split software. Explore the wide range of tools to split files of Email Client and other Desktop application.

Right now, EmailDoctor has a batch of most-in-demand file split software tools:

#1 Split NSF File

Runs on Windows® 10 / 8.1 / 8 / 7 / Vista / XP (32 & 64 bit)
  • Split file by Size
  • Split file by Folder
  • Split file by Year
  • Split file file by Date

#2 Split PST File

Runs on Windows® 10 / 8.1 / 8 / 7 / Vista / XP (32 & 64 bit)
  • Split file by Size
  • Split file by Folder
  • Split file by Year
  • Split file file by Date
  • Split file by Email ID

#3 Split OST File

Runs on Windows® 10 / 8.1 / 8 / 7 / Vista / XP (32 & 64 bit)
  • Split file by Size
  • Split file by Folder
  • Split file by Year
  • Split file file by Date
  • Split file by Email ID
  • Split file by Category

More will be listed in the future as per user demand.

Benefits of EmailDoctor Splitter Tools


  • Lightweight tools that are easy to download, install and use
  • Quick and efficient as it takes limited time to split the file
  • Simple software range that does not require technical expertise
  • Secure programs that do no change the original content and file structure
  • Free version available to test the splitter software

Ready to Use?


Are you ready to use the file splitter tools to easily split a large mail file into multiple smaller ones? If Yes, simply go to the corresponding page as per your file format and download the required application for free.

This free version is a trial-basis program that lets you split limited number of items from the file at a time. You can use this demo version to understand the working of the software.

Top List of Available File Split Software