Bulk mailing involves sending a combined mailing of offers from different advertisers, sometimes non-competing ones. This method is widely used in B2B marketing, particularly for targeting subscribers to trade journals. In practice, it takes the form of a set of coupons the size of playing cards, with one side dedicated to presenting the offer and the other for a reply by mail should further information be required. This approach allows the costs of the campaign to be shared among the participating advertisers, thus providing a cost-effective solution for all parties involved. For more concrete examples and visuals, please refer to the specific illustrations.