What Office 365 Backup Tool Does
What you can do with Office 365 Backup Tool: sign in to your mailbox, choose what to save, and pick an output format.
Microsoft 365 Cloud Connection & Backup
OAuth 2.0 PKCE, Admin Impersonation & Direct Cloud Streaming
Official Microsoft 365 Login
MODERN AUTHAuthenticate securely through Microsoft's official sign-in screen. Fully supports Multi-Factor Authentication (MFA).
Single & Batch Mailbox Archival
ENTERPRISEBack up individual user mailboxes or entire organization tenants using administrator credentials.
Direct Local Disk Streaming
DIRECT SSLDownloads directly from Microsoft cloud infrastructure straight to your local or network storage without cloud relays.
Mailbox Folders, Contacts & Calendars
Inbox, Sent, Custom Folders, Shared Mailboxes & Archive Inboxes
Full Folder Structure
ORGANIZATIONPreserves complete mailbox hierarchy, including Online Archives, Shared Mailboxes, and user sub-folders.
Contacts & Calendar Backup
PIM DATAExports company address books and calendar appointments alongside emails for complete data retention.
In-App Email Preview
PREVIEWView messages and verify attachments before starting the backup process.
Granular Filtering & Duplicate Prevention
Filter by Date, Subject, Sender, and Skip Redundant Messages
Date & Keyword Filters
FILTERINGIsolate emails by specific date ranges, senders, or keywords to create targeted legal or compliance archives.
Automatic Duplicate Skip
DEDUPLICATIONEnsures duplicate items across folders are not saved twice, saving disk space.
Resume Interrupted Backups
RESUME SAFEResumes downloads smoothly without restarting if internet or session disconnects occur.
Export to Outlook PST, MBOX, EML & PDF
Create Offline Archives or Cross-Migrate to Google Workspace
Split Outlook PST Files
PST EXPORTConverts Office 365 mailboxes into Outlook PST files with automatic splitting to avoid 50GB file limits.
Searchable PDF with Attachments
PDF COMPLIANCECreates standalone PDF copies of important emails with embedded attachments for records and audits.
Direct Cross-Cloud Migration
CLOUD TO CLOUDMigrates mailboxes directly to Google Workspace, another Microsoft 365 tenant, or private IMAP servers.
Try Office 365 Backup Tool
Download the free trial (limited to 50 items per folder) to check the result on your own data, or choose a license to remove the limit.