Impact of running in CASS mode versus non-CASS mode using Finalist or CODE-1 Plus

Products Affected:  CODE-1 Plus, Finalist
 
What is the impact of running in CASS mode versus non-CASS mode for the CODE-1 Plus and Finalist?

The USPS Coding Accuracy Support System Certification (CASS) process is designed in cooperation with the mailing industry to improve the accuracy of addresses, i.e. correcting 5-digit ZIP, appending ZIP+4, delivery point information and carrier route codes that appear on mail pieces.
 
Submitting the USPS CASS form 3553 for a mailing list validates that the mailing list went through a CASS certified software product and the mailing is eligible for automation rate discounts.  The CASS form is generated when running a job using required parameter settings and processes per rules and regulations of CASS certification. 
 
The main difference between CASS and non-CASS mode is the generation of the USPS CASS form 3553.  If software is no longer considered CASS certified or running without the required settings for CASS certification, batch jobs will continue to be processed but  the USPS CASS form 3553 will no longer be generated.
 
Examples of possible impact:
 
Example 1 - A mailing of approximately 100,000 pieces (addresses):

A file of 100,000 addresses is processed through a CASS certified product (CASS mode) and USPS CASS form 3553 is generated.  This mailing list of 100,000 addresses with the CASS form 3553 is submitted to the USPS and are eligible to be mailed at a presorted rate.  
 
Example 2- A mailing of approximately 100,000 pieces:

A file of 100,000 addresses does not go through a CASS certified product (non-CASS mode) and a USPS CASS form 3553 is not generated.  Mailing list of 100,000 pieces without the CASS form 3553 is submitted to the USPS and are not eligible to be mailed at a presorted rate.  This will cost the mailer the full First Class rate for each piece of mail.
 
Therefore, the difference of running in CASS mode vs. non-CASS mode would be the loss of discount savings in postage.  If larger mailing lists are processed or numerous mailing lists are processed on a monthly or yearly basis, the cost could be significant.
UPDATED:  July 8, 2019