How to delete emails from Mailbox using Exchange PowerShell
Go to Exchange Management Shell Use following Command How to delete emails by Subject line Search-Mailbox -Identity "Test@123.com" -SearchQuery 'Subject:"Your Subject"' –DeleteContent Confirm with Yes In status PS will show you result count and Size of total deletion How to delete emails by from In status PS will show you result count and Size of total deletion Search-Mailbox -Identity "Test@123.com" -SearchQuery 'Subject:"123@ABC.com"' –DeleteContent You also can delete all email from specific @domain from identified mailbox (Your Mailbox) by putting @Domain.com only Search-Mailbox -Identity "Test@123.com" -SearchQuery 'Subject:" @ABC.com"' –DeleteContent