As demands in the marketplace have evolved and as the adoption of new technologies has changed, presenting notification and reminders to users in a multi-modal fashion is a requirement. A recipient may not be in front of their email or have access to their fax machine. They may be in a meeting and cannot check their voice messages. To deliver an effective communication you need multiple ways to deliver that notification, escalating procedures for sending the reminder whenever a recipient cannot be reached, and opt-in/-out opportunity for the recipient.