Inactive shared mailboxes often contain years of customer communication and business records that should be preserved before cleanup activities begin. Many administrators Export Office 365 Shared Mailbox to PST so that historical mailbox data remains available for audits, compliance, or future reference. The Export Office 365 Shared Mailbox to PST process should preserve emails, folder hierarchy, calendars, contacts, and attachments without affecting mailbox integrity. Along with Microsoft-native options, utilities such as the Cigati Office 365 Backup Tool are commonly considered because they support exporting shared mailboxes directly to PST while maintaining mailbox content. After completing the export, reviewing mailbox statistics, validating folder counts, and opening the PST file helps verify that every mailbox item has been archived successfully before deleting or disabling the shared mailbox. Community feedback about reliable workflows, validation procedures, and experiences with the Cigati Office 365 Backup Tool or similar Microsoft 365 backup utilities would be valuable for administrators planning long-term shared mailbox retention.
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