Hi @Md Nasir Uddin ,
Unfortunately, you cannot recall a sent email in Outlook Web version for Mac. According to Microsoft Support, message recall is only available if both you and the recipient have a Microsoft 365 or Microsoft Exchange email account in the same organization, and you use the Outlook desktop app to send and recall the message. You can’t recall a message that’s protected by Azure Information Protection, or a message that’s sent via Outlook on the web.
More information, see: Recall or replace an email message that you sent
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