Core Features

Migration Engine

Batch PST Migration

Import single or multiple PST files simultaneously into any Office 365 mailbox — user accounts, shared mailboxes, or admin accounts. No file size restrictions. Supports PST files from Outlook 97 to 2021.

Incremental / Delta Sync

Smart checkpointing system detects already-migrated items and skips them on re-run. Handles network interruptions and system restarts gracefully — resume from exactly where you left off.

Date Range Filtering

Apply precise date filters per category — migrate only emails from a specific period, calendar events from the current year, or contacts modified after a certain date. Granular control for every job.

Folder Structure Preserved

100% faithful reconstruction of your original folder hierarchy. Custom folders, subfolders, labels, rules, and categories are all preserved exactly as they appear in the source mailbox.

Detailed Migration Reports

Generate exportable CSV/PDF reports after each job showing total item counts, success rates, skipped duplicates, and flagged exceptions. Perfect for compliance auditing.

100% Offline Processing

Your data never touches our servers. Everything is processed locally on your machine using OAuth 2.0 and encrypted HTTPS to communicate directly with Microsoft 365 APIs.

Import Sources

200+ Supported Sources

Import from virtually any email platform or format.

PST Files
Outlook Archive
Gmail
Google Workspace
Exchange
On-Premise Server
IMAP
Universal Protocol
Yahoo Mail
Webmail
Outlook.com
Microsoft
Thunderbird
MBOX / EML
Lotus Notes
NSF Format
Apple Mail
macOS Mailbox
Zoho Mail
Cloud Email
ProtonMail
Encrypted
+189 More
All Supported
Comparison

Office 365 Import vs. Alternatives

Feature Office 365 Import Manual Method Cloud Tools
Batch PST Migration Unlimited files Manual only⚬ Limited
Incremental Sync Built-in N/A Rare
Date Range Filtering Per-category No⚬ Basic
Folder Structure 100%⚬ Partial⚬ Varies
Offline Processing Fully offline⚬ Partial Cloud-only
200+ Sources Yes No⚬ Under 50
Migration Reports Item-level None⚬ Summary
24/7 Support Live Chat No⚬ Ticket
Setup Time Under 5 min Hours⚬ 30–60 min

See All Features in Action

Download the free trial and run your first migration in under 5 minutes.