Open Task Scheduler
Right Click Create New Task
Go to Tab Actions and click on New
Now enter powershell.exe under Program/scripts
Add argument > point this to the powershell script, eg C:\scripts\email.ps1
now the very simple powershell script: email.sp1
Send-MailMessage -to <recipient email address> -Subject "Backup Success" -body "The server backup job on server1 completed successfully" -smtpserver <your mail server> -from <sender email addreess>