$lastMon = ((get-date).AddDays(-7) -split(" "))[0]

$lastFri = ((get-date).AddDays(-3) -split(" "))[0]

$emsno = Read-Host -Prompt "plz input EMS No."

$smtpserver = "172.17.8.52"

$sender = "chen.chen@abc.com"

$to = "simin.z@abc.com"

$cc = "chen.chen@abc.com"

$subject = "Pls Send backup media from Hangzhou to Shanghai"

$body = "Dear Lisa, 

Please send weekly backup tape ($lastMon -> $lastFri) to Shanghai  office today by EMS couri 

The EMS NO. is: $emsno. 

yours,

"

Send-MailMessage -SmtpServer $smtpserver -From $sender -To $to -Cc $cc -Subject $subject -Body $body