Hi,
Search entire mailbox and delete the required subject: Get-Mailbox -ResultSize unlimited | Search-Mailbox -SearchQuery subject:"task for nextweek" -DeleteContent
Search bob's mailbox and delete the required subject: Get-Mailbox -ResultSize unlimited | Search-Mailbox identity
bob@company.com -SearchQuery subject:"task for nextweek" -DeleteContent
Regards from www.windowsadmin.info | www.blog.windowsadmin.info