What does the Clean Door/Clean Window Policy by American Express prohibit?

The Clean Door/Clean Window Policy established by American Express is primarily focused on maintaining a uniform and unobtrusive appearance at merchants' locations, particularly concerning the display of promotional or point-of-purchase materials. This policy prohibits merchants from placing point-of-purchase materials on or around their establishments, which is aimed at ensuring that the branding and promotions of American Express are not diluted by other competing visual elements. By enforcing this policy, American Express aims to create a consistent and professional environment that reflects positively on its brand.

Other options, while they may involve certain practices related to payments and promotions, do not directly address the core concept of the Clean Door/Clean Window Policy as it pertains to the visibility and display of marketing materials within the merchant's establishment.