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Knowledge Base & Operational DocumentationHow to Recover a Shared Mailbox After an Accidental Retention Policy Change
11/10/2026
A retention change can remove items earlier than expected or place messages into a recovery area.
Checks to make
Confirm policy change history and affected date range, preserve audit records, and review available recoverable items and backups. Restore into a controlled mailbox or folder first, validate ownership and contents, and correct the policy before normal use resumes.
When to get help
Email and backup recovery support can assess mailbox restoration options. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.