Video

Guide

Eula

Aryson Import PST to Office 365 Tool - Rating & Reviews

Aryson Software is top-rated and highly trusted among users for its user-friendly interface and compatibility.

Expert Reviews

Rating & Reviews

PST to Office 365 Migration – Supported Mailbox Data

  • Email Migration: Transfer e-mails from PST files into your chosen Microsoft 365 mailbox—keeping all details like subject line, sender, recipient, CC, BCC, date/time stamp, and message body intact. This utility also accommodates email folders—inbox, sent items, drafts, outbox, junk mail, and even deleted items.
  • Attachments: Move attachments received via email - such as documents, images, PDFs, audio/video files, links, and even embedded objects.
  • Email Filtering: Select specific emails for migration using filters such as From, To, Subject, and Date Range.
  • Contact Migration: Move Outlook contacts from PST to Microsoft 365 along with available contact information, including Full Name, Display Name, Email Address, Job Title, Company, Business Address, Home Address, and Phone Numbers.
  • Contact Information: Retain supported fields such as Mobile Phone, Business Phone, Home Phone, Fax, Department, Notes, Web Address, and IM Address.
  • Contact Groups: Aryson’s Import PST to Office 365 Tool can migrate individual contacts and supported contact groups stored in the PST file.
  • Calendar Migration: Move your Outlook calendar items into Microsoft 365 - this includes appointments, meetings, repeating events, categories, venues, time frames, and alerts.
  • Calendar Attachments: Migrate files and documents attached to supported calendar entries
  • Meeting Information: Retain available attendee, scheduling, and event details during migration.
  • Task Migration: Transfer Outlook tasks - all relevant details included like Subject, Start Date, Due Date, Priority, Status, Completion percentage, and reminders.
  • Task Types: Support the migration of one-time, recurring, and assigned tasks available in the PST file.
  • Task Attachments: Transfer supported files, notes, comments, and other information associated with tasks.
  • Notes Migration: This Outlook to Office 365 converter can transfer Outlook Notes are stored in the PST file to Microsoft 365 while retaining supported note information.
  • Note Details: Preserve available Note Text, Created Date, Modified Date, and Category information.
  • Folder Migration: Transfer PST folders and subfolders while retaining the original folder arrangement.
  • Custom Folders: Migrate supported user-created folders along with their mailbox contents.
  • Archive Data: Transfer supported archive data from PST files to the configured Microsoft 365 destination.
  • Folder Hierarchy: Maintain the source PST folder structure so that migrated mailbox data remains organized in the destination mailbox.
  • Supports all major attachment types such as PDF, JPG, ZIP, and more.
  • HTML Body: Shows the email as it appears in a web browser (visual fidelity).
  • Attachment: Lists all attached files for verification.
  • Plain Text: Displays only the unformatted message text.
  • Headers: Shows the complete Internet mail headers (for forensic/route verification).
  • MIME: Displays the technical structural data (encoding and boundaries).
  • Raw HTML: Shows the unprocessed source code of the email.
  • Shows an organised hierarchical mailbox structure – with Inbox, Sent, Drafts, Archive, and many more folders.
  • Displays how many emails have been selected compared to your total mailbox count.
  • Folder Tree (Left): Navigate the nested folder hierarchy. Use Search Tree Contents to locate specific folders, and Collapse All to quickly minimize the view.
  • Email Table (Right): Displays the messages contained within the selected folder.
    • Attachment Indicator: Emails containing attachments are visibly colored yellowish for quick identification.
    • Filtering: Use Search Table Contents and the Dropdown Filter (To/From/Subject) to narrow down the message list.
  • Preview Failure Option: If the in-app preview fails, select the View in browser if preview fails option to open the message in your default web browser.

Comprehensive Features of Aryson Import PST to Office 365 Tool

Import PST File into Office 365

Directly Migrate PST to Microsoft 365

Aryson PST to Office 365 Migration Tool transfers Outlook PST data directly to Microsoft 365 without requiring an intermediate file format. Select Microsoft 365 as the destination, and select the authentication method—modern OAuth or impersonation. No credentials are stored on any external server.

batch

Batch PST Migration

Process multiple PST files in a single migration session instead of handling each file separately. The batch processing option of this Outlook to Office 365 converter is suitable for administrators and organizations migrating data from multiple Outlook users. PST files can be added individually or through folder selection and drag-and-drop options.

mapping

Flexible Microsoft 365 Mailbox Mapping

Map individual or multiple PST files to their corresponding Microsoft 365 mailboxes using manual, bulk, or CSV-based mapping. You map multiple files to a particular admin account using manual selection or CSV import. Alternatively, you can map each file to a specific mailbox. The mapping interface allows administrators to review the configured source and destination accounts before starting the Outlook to Office 365 migration.

advanced

Advanced PST Preview

With this Import PST to Office 365 Tool, review PST mailbox contents before initiating the migration. The preview panel provides access to emails, attachments, contacts, calendars, tasks, notes, headers, MIME information, HTML content, plain text, and raw HTML. This allows users to verify source data before transferring it to Microsoft 365.

emails

Selective Email Migration

Use the available search and filtering options to find out which mailbox data you really need to migrate. You can search for emails by subject, recipient (To), or sender (From); whilst the date-range filter lets you narrow down your migration to a very specific time frame indeed.

Removes Duplicate Emails

Duplicate Email Removal

The duplicate removal option identifies redundant emails during the migration process. The Aryson PST to Office 365 Migration Tool can compare supported email fields, including To, From, Subject, Bcc, and Body, to help prevent unnecessary duplicate data in the migration output.

Restore OST File to Office 365

Folder Structure and Default Folder Mapping

This is a comprehensive software that allows you to backup Office 365 mailbox data as well as restore Outlook data files. Besides PST, one can import an OST file to Office 365 as well. It possesses all other features similar to PST to O365 import.

Wide Supportability for Windows OS

Better Attachment Management

Control how email attachments are handled during migration. Users can retain attachments with their respective emails, save attachments separately, or exclude attachments when they are not required. This provides greater control over the amount of data transferred to the Microsoft 365 mailbox.

split-large

Handle Large PST Files via Splitting

The software provides PST splitting capabilities to migrate large Outlook archives. Divide large resultant PST files into smaller PST files according to the selected size. PST splitting can make large archives easier to store, manage, transfer, and process when working with extensive Outlook mailbox data. Along with that, the risk of PST file corruption decreases, which eventually improves Outlook performance.

naming-convention

Custom Naming Convention

Outlook to Office 365 Converter lets you apply a defined naming pattern to exported mailbox data. The available fields are Date, Subject, and Sender. Custom naming helps maintain consistent identification of files and organized storage when processing multiple PST archives.

corruption

Corrupted PST Detection

The software detects and reports corrupted, locked, invalid, or blank PST files before processing. This allows users to identify problematic source files before proceeding with the Outlook to Office 365 migration. Microsoft also notes that corrupted PST items may be skipped during Microsoft 365 PST import, making source-file validation an important migration consideration.

migration

Migration Progress and Export Reports

Track the migration process through the built-in progress indicator and review the generated export report after completion. The reporting functionality provides a record of the processing status and results for migration tasks.

office365

Microsoft 365 Migration Monitoring

Monitor the progress of PST migration and review processing results after completion. Microsoft 365 imports can be affected by service-side processing rates and mailbox conditions, so migration status and reporting are important when processing large or multiple PST archives. Microsoft states that its PST Import service has a typical ingestion rate of approximately 24 GB per day, although this rate is not guaranteed.

windows

Windows and Outlook Compatibility

The Import PST to Office 365 Tool supports multiple Windows and Outlook environments, including Windows 11, 10, 8.1, 8, 7, Vista, XP and supported Outlook versions, including 2024, 2021, 2019, 2016, 2013, 2010, and earlier versions as documented in the product material.

How Does the Aryson PST to Office 365 Mailbox Converter Work?

Migrate your Outlook data files to Microsoft 365 in 4 simple steps

Step 01: Download and Launch the Software

Install the Aryson PST to Office 365 migration tool and run it as an administrator.

Step 02: Import PST File & Preview Metadata

Add PST/OST files and cross-verify their details via the Preview panel.

Step 03: Select Microsoft 365 as Destination
Select Microsoft 365 as the destination, choose the mapping mode, and map the PST file to the intended Office 365 mailboxes.
Step 04: Apply Filters and Start Migration
Choose the migration filters as required, begin the conversion, and monitor it afterwards.

Aryson Import PST to Office 365 Tool: System Specifications

Software Download

(Windows)

Download Now


(Linux)

Download Now


Size: 245 MBVersion: 26.7 ( Updated On 28 February 2026 )

Trial Limitations

The free demo version includes all features available in the fully licensed version, so you can properly evaluate the Aryson PST to Office 365 Migration Tool before committing to a purchase. The only limitation is that it allows backup of up to 50 emails per folder.

Requirements & Supported Versions

Hard Disk Space: 500 MB of free hard disk space required

RAM: 4 GB of RAM (4 GB is recommended)

Processor: Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz

Supported Platforms

Window OS: Windows 11, 10, 8.1, 8, 7, Vista, XP, 2000, 98, NT, and 95.

Software Prerequisites

  • If you are operating Windows OS 11, 10, 8, or 7 (32-bit or 64-bit), then you must launch the tool as an administrator.
  • Turn off the Windows Firewall for proper installation.
  • Disable the antivirus programs.

FAQ

Request For Software Customization

Note: If you need to customise Aryson Software or need additional specific features, then provide this software customisation. Request Quote

Aryson PST to Office 365 Mailbox Converter: Free & Licensed Version

Evaluate the capabilities of the free and premium versions of the software

Product Features Free Version Full Version
Convert PST Files to 12+ File Formats 50 items /folder Entire Mailbox
Export PST Data to Email Clients & Cloud Services 50 items /folder Entire Mailbox
OST source format (in addition to PST)
Preview PST Mailbox Data
Perform Bulk PST Conversion
Apply Date-Based Email Filters
Detect and Remove Duplicate Emails
Map PST Data to Office 365 Mailboxes
Map PST Data to Google Workspace
Export Attachments Separately
Apply Custom File and Folder Naming
Split the Output PST File
Exclude Attachments During Migration
Keep the original folder Hierarchy intact
Compatible with All Windows & Outlook Versions
24/7 Technical Support
Money Back Policy

Frequently Asked Questions

Ans. No, even if you don’t have Outlook installed on your system, it is possible to use the Aryson PST to Office 365 Migration Tool.

Ans. Yes. The software provides manual, bulk, and CSV-based PST mapping, allowing administrators to assign multiple PST files to their respective Microsoft 365 user accounts during batch migration.

Ans. The PST to Office 365 Mailbox Converter supports OAuth 2.0 and administrator-driven authentication for Microsoft 365. The required Microsoft 365 account permissions must be configured before starting the migration.

Ans. The Aryson PST to Office 365 Migration Tool can identify corrupted, locked, invalid, or blank PST files before processing. Problematic files can therefore be eliminated rather than being treated as normal migration sources.

Ans. Yes, the date-range filter allows users to select a specific time period and migrate only the required email data instead of processing the complete mailbox archive.

Ans. Microsoft 365 mailbox capacity, message-size restrictions, and service-side processing conditions can affect migration. Administrators should verify the available destination storage and Microsoft 365 limits before migrating large PST archives.

Ans. Yes, the software provides a progress indicator and export report that helps users review the processing status and migration results after the PST data has been transferred.

What Our Customers Say

Real migrations. Real results

review-rating