PowerShell, email report with specific word in the body and email status.

Hello,

I've two doubt:

1) I need to create a Powershell script that return a report if a "keyword or string" is present in the body/message. Can I do it? I've tried to find something but probably I can't.

2) Can Powershell return the status of email (READ/NOT READ)? Example: a query return all mail sent by me, i would like see if receiver has read or unread the email.

I've Exchange 2010 SP2.

Thank you.