I suggest to build your own solution using Trigger Happy by Damien Katz. Add a new field to the memo form ( DeliveryDateTime ). Configure a trigger to run when mail arrives in mail.box. Check the DeliveryDateTime. If DeliveryDateTime > @Now then set the mail to hold. The same agent now checks the DeliveryDateTime field in mails on hold. if DeliveryDateTime < @Now then remove the hold flag. The mail is now routed. I haven't tried yet, but this should work ...