eDocument Direct can deliver billing documents to your customers several ways.

Grace Period Paper Bills.
As an option, your organization can send one last bill after a user elects to get bills sent electronically. This last bill thanks the customer for choosing electronic delivery and notes that this is the last paper bill he/she will receive.
Encourage the Electronic Option.
Paper bills should remind and encourage the customer that he/she can enroll in eBilling and pay on-line.
Multiple Attempts Are Made.
4 attempts are made to email your customer. These attempts are timed 6 hours apart. This is done to mitigate any temporary failures of email systems.
If all attempts to email fail, eDocument Direct can generate and mail a paper bill. This bill will contain a message indicating that the email failed and asks that the customer update the email address.
Some Times You Still Need the Paper.
Certain notices or document types must be paper mailed. For example, even if a user has elected to suppress paper billing, you may select certain document types such as a shut-off notice to be paper mailed in addition to electronic delivery.
This feature will also fall back to a paper document delivery method for a user whose electronic delivery channel fails to respond. Emails can be attempted any number of times. After all attempts fail, the paper version of the document will be generated and mailed. This document will include a notification to the customer informing him/her that he/she needs to update their information so electronic delivery may resume.
eMail the Bill.
In some cases, it is desirable to send the bill with the email. The bill is sent as an attachment. This method is generally used if little or no security or protection of personal information is required.
eMail a Link.
A notice is sent to your customer from your organization. The notice informs the customer that he/she can click on a link and view or pay the bill. This is a very secure method because the bill document is not sent using email.
This email can contain relevant and timely content in addition to the notice. It may also contain a message requesting that the customer go green and eliminate the paper mailed bill if he/she is still receiving a paper bill.
If this is an error or unexpected, the customer can call customer service and learn more.