title: openerp schedule server action
body: <p>In OpenERP 6.0.1, I've created a server action to send a confirmation email after an invoice is confirmed, and linked it to appropriately to the invoice workflow. now normally when an invoice is confirmed, an email is automatically sent.<br>
  is there a way to set a date for when the email should be sent instead of being sent immediately? like "send email after one week of confirmation" ?</p>