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There are two ways to bypass this Couple ways to do itissue.
1.
Workaround 1: From Outlook Desktop App
Copy (Ctrl + C) the message from the shared mailbox and then paste (Ctrl + V) the message to your inbox.
Use the “Report Phishing” button to report it as spam.
Delete the message from your inbox.
OR
2.
I use
Workaround 2: https://outlook.office365.com/mail/ on the web
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