Hello,
You can do that using scripts and the Send-MailMessage cmdlet. Example:
$to = "%mail%" # TODO: modify me
$cc = "%adm-ManagerEmail%" # TODO: modify me
$subject = "My Notification'" # TODO: modify me
$smtpServer = "mail.domain.com" # TODO: modify me
$from = "noreply@domain.com" # TODO: modify me
$body = @"
Hello %name%,
Please review your pending Approval Requests ASAP.
Do not reply to this e-mail, it has been sent to you for notification purposes only.
"@ # TODO: modify me
Send-MailMessage -To $to -cc $cc -from $from -SmtpServer $smtpServer -Subject $subject -Body $body
To add a script to Business Rules, Custom Commands and Scheduled Tasks, use the Run a program or PowerShell script action.