Outlook users often encounter scenarios where they need to recover mailbox data from inaccessible or orphaned OST files. Whether it’s due to Exchange Server downtime, mailbox deletion, or profile corruption, converting OST to PST is the most efficient solution to regain access to essential mailbox contents like emails, contacts, calendars, attachments, and more. In this guide, we present the Top 5 OST to PST Converter Tools available in 2025, with MailsDaddy OST to PST Converter ranked at the top for its advanced features and unmatched reliability.
1. MailsDaddy OST to PST Converter – #1 Overall Choice
Website: Best OST to PST Converter
MailsDaddy OST to PST Converter leads the market with its flawless conversion capabilities and clean user interface. Designed for both technical and non-technical users, this tool ensures the complete recovery of OST files including emails, calendar entries, tasks, contacts, notes, and journals. It supports encrypted, orphaned, and oversized OST files, offering multiple export options like PST, EML, MSG, MBOX, HTML, and more.
Key Features:
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Simple and intuitive interface for all user levels.
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Converts even corrupted or inaccessible OST files.
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Maintains folder hierarchy, email formatting, and metadata.
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Preview feature to inspect all mailbox items before conversion.
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No dependency on Exchange Server or Outlook installation.
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Compatible with Outlook 2021/2019/2016/2013 and below.
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Export options include PST, MBOX, EML, HTML, RTF, and MSG.
2. Stellar Converter for OST
Stellar is a well-known name in data recovery and provides a reliable OST to PST converter. It works smoothly for large OST files and provides detailed previews of all mailbox items.
Highlights:
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Easy-to-use interface.
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Supports Office 365 and live Exchange export.
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Handles large OST files efficiently.
Drawbacks:
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Higher pricing than alternatives.
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Free version only previews data.
3. SysTools OST Recovery & Converter
SysTools offers a feature-rich OST conversion solution suitable for professionals and IT admins. It comes with batch conversion support and advanced filtering options.
Highlights:
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Supports batch OST file conversion.
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Converts data like emails, contacts, calendars, and tasks.
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Maintains structure and integrity.
Drawbacks:
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UI is functional but outdated.
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Not ideal for casual or occasional users.
4. Kernel for OST to PST Converter
Kernel’s OST to PST tool is known for its consistent performance and Exchange support. It recovers data from offline OST files and migrates it to PST and other destinations.
Highlights:
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Fast and reliable conversions.
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Works on all OST file types including encrypted ones.
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Direct export to Office 365 and Exchange.
Drawbacks:
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Limited trial version.
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Slightly technical interface.
5. Shoviv OST to PST Converter
Shoviv provides a comprehensive tool for OST to PST conversion with support for multiple formats and cloud destinations.
Highlights:
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Converts multiple OST files in one go.
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Export to PST, EML, MSG, Office 365, and Live Exchange.
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Supports large OST files without size limitation.
Drawbacks:
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Interface can feel overwhelming.
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Higher learning curve for non-tech users.
Why MailsDaddy OST to PST Converter is the Best Among All
MailsDaddy OST to PST Converter secures its position at the top because of its perfect balance of power, performance, and simplicity. Unlike many tools that require Outlook or Exchange Server, this software operates independently and flawlessly handles all OST file types, including corrupted or password-protected ones.
What sets MailsDaddy apart:
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Lightning-fast conversion speed.
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No data loss or formatting issues.
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Wide range of export formats and full item preview.
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Lifetime license and excellent customer support.
Whether you’re an individual Outlook user or managing a corporate mailbox recovery project, MailsDaddy OST to PST Converter delivers unmatched reliability, making it the most preferred solution of 2025
About MailsDaddy:
MailsDaddy Software Pvt. Ltd.- A global pioneer in database recovery and exchange migration, has a set of innovative and acclaimed solutions to make things easier in a variety of ways. MailsDaddy is located in New Delhi which is also the capital of India. Maintaining the brand position with global clients. MailsDaddy has expanded its offices in a very short span of time from a single location to the European region with 24*7-lifetime free technical support. Till now we have more than 5 million customers in the world.
The movement of email is happening very fast, so there are bound to be different types of email communication. If you are also connected to any email service and want to migrate the data, then connect with the MailsDaddy software. We provide various types of email conversion, backup, and migration solutions that will surely give you successful results.
MailsDaddy Software has been at the forefront of this field for seven years and has been manufacturing a wide variety of different software. We currently have over 30 types of solutions that are fully capable of doing everything from migrating emails to creating backups.
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