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View Full Version : Can I migrate an old OST mailbox to Office 365?



Robertparkar
07-31-2026, 12:47 AM
Yes, you can migrate an old OST mailbox to Office 365 even when the original Outlook or Exchange profile is no longer available. The MailsDaddy OST to Office 365 Migration Tool is designed to access OST files independently and transfer their mailbox data directly to an Office 365 account.

The software can migrate emails, attachments, contacts, calendars, tasks, notes, and other mailbox items while maintaining the existing folder hierarchy and mailbox organization. It also supports orphaned and inaccessible OST files, which can be particularly helpful when an Exchange connection or original user profile is unavailable. With preview and selective migration options, users can review their mailbox data and transfer only the required content, making the overall migration process simple, organized, and efficient.

alexa156
08-03-2026, 05:05 AM
Yes, you can migrate an old OST mailbox to Office 365, provided the OST file is accessible and its data can be extracted. If the OST file is orphaned, offline, or Outlook cannot open it, using a professional tool is the most reliable option. Shoviv OST to Office 365 Migration (https://www.shoviv.com/ost-to-office365.html) Tool allows you to migrate old OST mailboxes directly to Office 365 without data loss. It preserves emails, contacts, calendars, attachments, folder hierarchy, and metadata throughout the migration. The software supports large OST files, batch migration, incremental export, and secure authentication, ensuring a smooth and efficient migration process