• The PreSort letter service offers the lowest postage rate if you mail in volume. It offers reduced charges to customers who barcode and sort their mail before lodgement and comply with relevant mailing conditions.
• Charity Mail postage discounts are available to organisations that can demonstrate that they have been endorsed by the Australian Taxation Office (ATO) as an income tax exempt charity. It provides lower prices for mailings of PreSort letters (not available for large letters). 
• The Clean Mail service can be used for machine addressed mail that has not been barcoded or sorted (not available for large letters).
• Direct Access is designed for business customers sending large quantities of international mail, including direct marketing mailings.