Powerful 8-in-1 Software Suite for Outlook Administrators

Stellar Toolkit for Outlook provides advanced software tools to help Outlook Administrators repair corrupted PST files & convert inaccessible OST to PST for recovering the mailbox data in vast scenarios. Also splits & compacts large PST, merges Outlook mailboxes, de-duplicates the emails, and resets Outlook password.

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

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Key Features

Recovers Data from Corrupt PST

Stellar Repair for Outlook Technician software in the Toolkit can parse severely corrupted PST file of any size and reconstruct mailbox data with 100% precision. It repairs password-protected PST file & recovers mailbox data in PST, MSG, EML, RTF, HTML or PDF file formats. It can also directly export the PST data to Office 365.

Extracts Data from Inaccessible OST

Stellar Converter for OST Technician software converts inaccessible OST into PST and extracts mailbox data in an accessible & portable format. It can convert the OST file of any size & directly export the data to Office 365 or Live Exchange. Also extracts mailbox data in MSG, EML, RTF, HTML or PDF file.

Splits Large PST to Improve Manageability

Stellar Splitter for Outlook in the Toolkit splits a large PST into smaller files in size range of 1–50 GB, thus reducing its chances of corruption & improving manageability. It can split PST file by Size, Date, Email ID, and Folders while maintaining the original structure and organization of emails.

Compacts PST for Optimal Performance

Stellar Compactor for Outlook in the Toolkit compresses the PST file to minimize the chances of corruption and increase the performance. It extracts the attachments in a new folder while preserving the interlinking of the PST file & attachments. Also cleans up Deleted Items & Junk Mail folders.

Merges Mailboxes with Zero Data Loss

Stellar Merge Mailbox for Outlook tool in the software suite collates mailbox data from multiple PST files and merges it in a single PST file with 100% data integrity. The software merges items across all mailboxes and eliminates duplicate and junk data. It also merges password-protected PST files.

Deduplicates Emails to Reduce Mailbox Size

Stellar Deduplicator for Outlook is an efficient tool for removing duplicate emails and thus reducing Outlook mailbox size. It provides multiple options to initiate action on duplicate emails, which include - ‘Delete’, ‘Mark as Expired’, ‘Copy to Folder’, ‘Move to Folder’, ‘Mark with the Flag’, & ‘Delete Permanently’.

Recovers Lost or Deleted Emails

Stellar Undelete Email for Outlook tool in the software suite can recover lost or deleted emails, attachments, contacts, notes, journals, tasks, etc. It also recovers deleted items from encrypted & password-protected PST files & further splits large PST to improvement manageability & performance.

Recovers Lost Password of Outlook

Stellar Password Recovery for Outlook tool in the software bundle accurately recovers lost or forgotten passwords for all Microsoft Outlook versions. It provides six different password sets as a master key allowing the users to regain access to their Outlook profile.

*Free download to scan and preview your lost or deleted data.

How It Works?

Software Specifications

About Product

Version 11.0
Release Date September, 2020
License Multiple Users
Edition Toolkit
Language SupportedEnglish, German, French, Italian, Spanish
System Requirements

Processor: Intel-compatible (x86, x64)
Operating System Windows 10, 8.1, 8, 7
Memory: 4 GB minimum (8 GB recommended)
Hard Disk:250 MB for installation files
Download Guides


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

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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.

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