Addresses not passing CASS and DPV validation (they are deemed invalid or undeliverable) will be removed from your final mail list. Upon request, we can send you a list of the undeliverable addresses but please note this ahead of processing. If the number of records exceeds 10% of the mailing list total quantity we will contact you for further instructions. Please note – all international records will be removed from the final mailing list. International records must be submitted separately for mail processing.