Bulk mail is a cost-effective way of sending large quantities of mail. By meeting the specified requirements, customers qualify for rebates on large consignments of letters.

The domestic bulk posting service applies only to letters posted in South Africa and domestic bulk mail intended for delivery in South Africa.

The pre-sorted bulk mail service is suitable for businesses that post large quantities of domestic letters with minimum volumes of 1 000 pre-sorted articles per consignment.

Remote meter-setting mail may only be posted at designated offices, all other payment methods used may be posted at any Post Office or mail centre.

Letters must be faced and tied in bundles when handed in over the counter.

The items must meet the relevant criteria as described in the Postal Rates brochure.

All articles in a consignment must originate from the same sender, must be identical in shape, size and mass category and the nature of the contents of the articles must be the same. The articles must contain return addresses.

No rebates/discounts are applicable to letters with stamps as a payment method.

The customer must have their address database checked and the customer must provide the official grading certificate with each posting together with the Bulk Mail Delivery Note.

The pre-sorted bulk mail must be posted at designated mail centres and mail accepting offices only.

Postal articles exceeding 353 x 250 mm in size, thicker than 30 mm and weighing more than 1 kg are not regarded as letters.