Direct mail is a marketing strategy that involves sending physical promotional materials, such as letters, postcards, or brochures, directly to potential customers' mailboxes. This method allows businesses to target specific audiences based on demographics, interests, or previous purchasing behavior. Direct mail can be an effective way to reach customers who may not engage with digital advertising. Companies often use direct mail to promote products, services, or special offers. It can include personalized messages to increase engagement and response rates. Many businesses track the success of their direct mail campaigns through unique codes or offers, helping them measure effectiveness and refine future marketing efforts.