How To Automatically Mark Messages as Read When Deleted in Microsoft Outlook?
Outlookで全てのメールを既読にする方法
Outlook でメールが自動的に既読になるのを停止するにはどうすればよいですか?
How to Mark Deleted Email as Read in Outlook - Office 365
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How do I stop Outlook from marking emails as read automatically?
Outlookでメールを受信トレイから特定のフォルダーに常に移動するルールを作成する方法 | Outlookのヒント