Top 4 Merge PST Applications in 2026: Comparison, Features, Pros, Cons.

Summary

The merge PST programs are developed to merge multiple Outlook PST files into one structured file and assist users to get rid of the file clutter and manage emails, contacts, calendars, tasks, notes and other mailbox data more efficiently. Selecting the appropriate PST merger is key if you are merging archives or old Outlook Profiles or prepping mailbox data for migration. This comparison study covers four solutions:DataVare Outlook PST Merge Expert, GainTools Merge PST, Softaken Merge PST Pro and TrustVare Contacts Manager. DataVare PST Merging Tool is a selective and full PST merging tool that supports both ANSI and Unicode files. GainTools gives many merging choices and folder level selection. Softaken provides multiple merging options, supports huge data and deleted items. TrustVare is not a dedicated PST merging, but a contact-management solution. However, it can manage, import, export, and combine contact data across formats. This article examines their essential features, benefits and limits to help consumers choose the right tool.

1. DataVare Outlook PST Merge Expert

DataVare Outlook PST Merge Expert is a professional tool to merge PST files to merge multiple Outlook PST files to one structured PST. It lets you merge whole PST files or pick specific folders such as Inbox, Contacts, Calendars or any other mailbox data. Supports ANSI and Unicode PST formats Supports merging PST files written by multiple versions of Outlook. You can choose a local destination that works best for you for the generated PST file. DataVare also says Outlook is not needed in the merger process. Its selective merging functions are particularly handy for customers who desire greater control over which Outlook information is merged.

Features

• Combine Multiple PST Files.
• PST data merge accomplished.
• Combine chosen PST folders.
• Simply combine the elements you want, such as Contacts or Inbox.
• Supports ANSI and Unicode PST files.
• Supports multiple Outlook version PST files.
• Creates a new PST file as a consequence.
• Set custom output location.
• No Outlook required.
• Checks mailbox data for correctness.

Pros

• Flexible possibilities for selective merging.
• Supports both ANSI and Unicode PST files.
• Helpful for merging numerous Outlook archive files.
• Easy workflow.
• No Outlook installation required.
• Merges, but retains original mailbox information.

Cons

• Full capability with licensed version.

2. GainTools Merge PST Tool

GainTools Merge PST Tool is a professional Outlook PST merging tool to merge several PST files into one PST file. It offers several merging methodologies so users can merge whole PST files, create separate folders for each PST file or merge only chosen folders like Inbox and Contacts. Application supports ANSI and Unicode PST formats and supports working with PST files created by several versions of Outlook. The user can pick two or more PST files and save the merged output to the desired local destination. The software has a basic UI and is also ideal for people with less technical skills. GainTools also offers free trial for evaluation purpose.

Features

• Combine multiple PST files.
• Select PST folders to merge.
• Combine Inbox, Contacts & other folders.
• Make a separate folder for each PST.
• Supports ANSI and Unicode PSTs.
• Supports PST files of Outlook 2003 to 2016.
• Save output locally.
• Fast merge process.
• Easy interface.
• Free trial available

Pros 

• Multiple ways to merge PST files.
• User-friendly interface
• Supports ANSI and Unicode files.
• Enables selective folder merging.
• Preserves email attributes and contact details.
• For users with no technical background.
• You can also purchase a lifetime license.

Cons

• The product page mentions support for Outlook-releases which are previous versions.

3. Softaken Merge PST Pro Tool

Softaken Merge PST Pro is a full fledged tool to combine several Outlook PST files into a single PST. It supports different merging methodologies like combining full PST data, establishing distinct folders for each source PST, linking similar folders and merging specific folders or items like contacts, calendars, notes, journals and Inbox data. The software can support both ANSI and Unicode PST files and can manage big PST data. It allows users to choose whether to include or omit deleted items in merging. Softaken also creates a new PST file without affecting the source files. It has a simple interface and many customization possibilities, making it a good solution for consolidating Outlook data.

Features

• Combine many Outlook PST files.
• Combine archives into one PST.
• Combine chosen folders.
• Combine contacts, calendars, notes, notebooks and other objects.
• Five combination options.
• Supports ANSI and Unicode PSTs.
• Include deleted things.
• Skips empty directories.
• Creates a new.pst file
• Supports big PST data.
• maintains the structure and content of the mailbox.

Pros:

• Wide range of merging possibilities
• Supports big PST file.
• Select folders and items flexibly.
• ANSI and Unicode compatibility.
• Allows deletion items control.
• Original PST files are not modified.
• Easy and interactive UI.
• Demo version available .

Cons

• Demo version restricted quantity of goods.
  
  

4. TrustVare Contact Manager

Further, TrustVare Contacts Manager is a contact management program and not a specific PST merging tool. It is excellent for users who want to combine and manage contact data from PST, OST, MSG, VCF, CSV, Excel, and NSF. The software can export contacts from PST and other supported files to VCF and import VCF contacts to PST, MSG, CSV and NSF. It also permits merging of numerous VCF files into one and splitting of huge VCF files. Its ability to batch process, selectively import and export, and handle different versions of vCard makes it useful for consolidating contacts. But in case customers need to merge Outlook PST emails and folders, then a specialist PST merger like DataVare, GainTools, or Softaken is more suitable.

Features

• Export contacts from PST, OST, MSG to VCF.
• Import VCF contacts to PST, MSG, CSV, NSF file software
• Merge numerous VCF files
• Separate big VCF files
• Batch processing of contacts.
• Selective import / export
• Supports different VCF version.
• ANSI and Unicode PST/MSG are supported.
• Standalone app.
• Works with several versions of Windows.

Pros 

• Strong contact management features.
• It supports several contact formats.
• Batch processing.
• VCF merge and split functions
• Helps consolidate contacts across formats.
• Works as a standalone unit.
• Supports big and small enterprises.

Cons

• “Paid license required for full features.

Conclusions

All four applications are useful, although they cater to slightly different needs. DataVare Outlook PST Merge Expert is a good alternative for those who require selective or comprehensive PST merging with ANSI/Unicode compatibility and folder-level management.

GainTools Merge PST is ideal for simple PST consolidation and provides numerous useful ways to merge.

Softaken Merge PST Pro stands out for users that need advanced PST merging choices, including selective folders, specific mailbox items, deleted-item control, large-data support, and numerous merging ways. 

If you are dealing with VCF and different contact formats, you might utilize TrustVare Contacts Manager for contact consolidation instead of full PST merger.

Final Words: Softaken Merge PST Pro and DataVare Outlook PST Merge Expert are the best picks in this comparison for devoted merging of PSTs. TrustVare is a good solution for wider contact management.

FAQs
1. What is a PST Merge?

PST Merge tool is designed to merge multiple Outlook PST files into single PST file. This utility allows users to integrate their emails, contacts, calendars and other mailbox data.

2. What is the best PST file merger software?

Softaken Merge PST Pro is a more powerful solution for demanding merging needs that offers many merge options and selective data merge features. DataVare is also a good alternative for selective PST consolidation.

3. Can I combine some folders from PST files?

Yes. DataVare, GainTools, and Softaken let users to choose specific folders or mailbox items instead of merging all objects.

4. Can I merge ANSI and Unicode PST files?

Yes, GainTools, Softaken & DataVare expressly supports ANSI & Unicode PST files.

5. Is TrustVare Contacts Manager PST Merger?

No. TrustVare Contacts Manager is mostly a contact management tool. It is not a specialist program for merging entire PST files but it handles contacts between PST and other formats for import/export and can merge VCF files.