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You should upgrade or use an alternative browser. My Mail application has been running slow so I wanted to Rebuild my mailboxes. During the rebuild of one of the largest mailboxes the Mail application unexpectantly quit. When I relaunched the Mail application all emails in that folder have disappeared. Not in the trash or moved to another folder.

How can I restore either that mailbox or all the mailboxes with Time Machine? Running Mail 16.0 on Sonoma 14.7.