Toolkit to Manage Outlook Data Files (OST/PST)

Stellar Toolkit for Outlook is 8-in-1 software kit to automate administrators and users’ day-to-day Outlook data file management tasks with 100% precision. It features tools for PST repair, OST to PST conversion, Outlook performance optimization, & more.

  • Repair corrupt or damaged Outlook PST

  • Convert OST file to PST file
  • Merge multiple PST files with precision
  • Split or Compact large PST file to avoid corruption
  • Remove junk & duplicate emails from Outlook
  • Recover lost password of Outlook data files (.pst)
  • Recover deleted emails & other items from Outlook data file

*The Free Demo version of Stellar Toolkit for Outlook only works with limited functionalities

Awarded by


Key Features

Outlook PST Repair icon

Outlook PST Repair

This module of Stellar Toolkit for Outlook is best suited in all those instances when PST file is damaged or corrupt and you are no longer able to get access to your account. With this module, you can repair all corrupt PSTs and recover all mailbox items in their original state.


  • Restores Corrupt PSTs data to new Outlook data file
  • Allows Recovery of selective individual mail items
  • Flexibility to Save and load scan results
  • Enables preview the recovered mail items
  • Provides various compact and split options for repaired PST file
  • MS Outlook Support – 2019, 2016, 2013, 2010, 2007, 2003
  • Option to save mailbox data of repaired PST file to Office 365

Option to Convert OST to PST icon

Option to Convert OST to PST

Convert either single OST to PST or all OST files into corresponding PST files. The software is equipped with exclusive ‘Batch Conversion Module’ having multiple features – saves Batch File containing multiple OSTs to load and convert these files into corresponding PSTs even after a time gap; saves complete mailboxes with Convert Mailbox feature; splits and saves PST files ‘By Date’ or ‘By size’ as required.


  • Provides an option to compact and split PST files
  • Converts up to 20 emails per folder in demo version
  • Saves converted files directly to Office 365 or Live Exchange Server
  • Exports Outlook contacts in CSV file format
  • Save the scan information which can be used at the time of conversion
  • Supports latest Windows 10 & MS Outlook 2019
Split Large PST icon

Split Large PST

If you have a large PST file, which is on the verge of damage or corrupt due to its size, split it with the Splitting module of this MS Outlook organizer tool, and create small PST and manage Outlook inbox mails efficiently. This module enables splitting the PST file on the basis of Date, Size, Mail Id and mail Folder.


  • Splits large PST files into smaller Outlook importable PSTs
  • Option to split multiple PST file at the same time
  • Create batch file to automate PST splitting process
  • MS Outlook Support - Outlook 2019, 2016, 2013, 2010, 2007 and 2003

Merge PST  icon

Merge PST

The Merge PST module is very useful to combine multiple Outlook PST files into a single file. It facilitates the option to merge or join PST files easily without loss of a single email. By using this module, you can merge or join all Outlook items like Emails, Calendars, Contacts, Notes, Journals and Tasks.


  • 100% assurance for integrity of the original PST files
  • Filters all duplicate emails
  • Compatible with password-protected Outlook PST files
  • Various saving formats like New and existing PST, Office 365, Outlook Profile and Exchange Server
  • Supports latest MS Outlook 2019

Compact Large PST icon

Compact Large PST

A growing Outlook PST file creates numerous issues; however, compaction is the best option to avoid them. This module of Stellar Toolkit for Outlook compacts a both a growing PST file and the OST file, thereby avoiding any unexpected crash of your Outlook profile.


  • Extracts mail attachments in a separate folder
  • Enables scheduling automatic compaction
  • Extracts attachments to a new folder
  • Compresses all attachments in a new PST File
  • Removes all attachments and saves in a new PST File
  • Option to empty ‘Deleted Items’ and ‘Junk Items’ folder
  • Supports latest Windows 10 & MS Outlook 2019

Recover Deleted Emails icon

Recover Deleted Emails

Sometimes, users delete their emails and other mail components, permanently from their Outlook profile. Such intentionally or accidently deleted emails are recovered with unique Deleted email recovery software. Along with emails, the recovery software also recovers mail attachments, contacts, calendars, journals and more from Outlook Data files.


  • Recovers data from OST file and PST file
  • Recovers deleted data from Password protected and encrypted PST files
  • Saves recovered files in various formats – PST, EML, MSG and more
  • Recovers deleted records in Lost and Found folder, in the Outlook profile
  • Splits large PST into smaller PSTs to improve performance
  • Supports latest Windows 10 & MS Outlook 2019

Additional Advantages

Remove Duplicate Emails icon

Remove Duplicate Emails

With the duplicate remover module of this MS Outlook Mailbox Manager, it is easy to filter out all the redundant and junk mails from your MS Outlook profile. This brings vital help in decreasing the overall size of your Outlook mail account and avoids any intermittent PST damage.


  • Identifies and removes duplicate and junk mails
  • Enables marking duplicate emails as 'Expired'
  • Facilitates copying or moving the duplicate mails to a different folder
  • Microsoft Outlook Support – 2019, 2016, 2013, 2010, 2007, and 2003

Recover Lost Outlook Passwords icon

Recover Lost Outlook Passwords

Forgetting the password applied to the Outlook account is no more a worry. The Outlook password recovery module of the software provides a set of six passwords that you can use to unlock the Outlook account.


  • Recovers lost or forgotten Outlook PST passwords
  • Provides a set of six different passwords
  • Works with encrypted PST file
  • MS Outlook Supports – 2019, 2016, 2013, 2010, 2007 and 2003

Try Stellar Toolkit for Outlook to manage complete MS Outlook accounts

*The Free Demo version of Stellar Toolkit for Outlook only works with limited functionalities

Software Specifications

System Requirement

ProcessorPentium Class

Operating System Windows 10, 8.1, 8, 7, Vista & XP

Memory2 GB minimum (4 GB recommended)

Hard Disk250 MB of Free Space

Software Delivery


License & Version

Technician LicenseMultiple Users


Interface Available

Language SupportedEnglish, German & French



Yes. You can recover lost or forgotten passwords of Outlook PST files using the ‘Recover PST Password’ option of the software.


Duplicate mails in the mailbox, specially the mails with attachment occupy unnecessary space and adds to the size of PST file. An oversized PST file is prone to various issues including corruption, making the mail items inaccessible.

The ‘Duplicate Mail Remover’ option of the software removes duplicate mail items on the basis of several comparison criteria an prevents the PST file from getting oversized.


No. The demo version of the software has some limited functionalities. Using the demo version, you can select, repair, and have a preview of the repaired PST items. The demo version of the software is very useful in evaluating the performance of a software. However, in order to save the repaired file, you need to purchase the licensed version. The full version of the software allows you to save the repaired messages in MSG, EML, RTF, PDF, HTML, DBX, and MBOX formats.


The ‘Split PST’ option of the Stellar Outlook Toolkit allows you to split a heavy file into multiple smaller and manageable PST’s. You can either use ‘Split by Time’ or ‘Split by Size’ option to split a file.

You May Be Interested in These Items

Stellar Converter for OST

Stellar Converter for OST

STELLAR CONVERTER FOR OST OST to PST Converter Tool Powerful software Recommended by MVP's and Administrators ..

Read More

Stellar Converter for OST Technician

Stellar Converter for OST Technician

Stellar Converter for OST Technician is a comprehensive solution that not only converts Outlook OST files into..

Read More

Stellar Converter for NSF

Stellar Converter for NSF

Stellar Converter for NSF Powerful Software widely recommended by Administrators & Experts worldwide to conver..

Read More