You can easily migrate PST to Office 365 by using MailsDaddy PST to Office 365 Migration. The tool is designed to securely import single or multiple PST files directly into Office 365 mailboxes without affecting the original data. It preserves email properties, folder hierarchy, attachments, contacts, calendars, and other mailbox items throughout the migration process.

The tool supports bulk PST migration, selective data transfer using filters, and mailbox mapping options, making it suitable for both individual users and organizations.