Compare that with mass advertising channels like radio, TV and print. Those outlets, while effective for some marketing and branding strategies, simply do not get in front of your target audience as effectively. Direct mail postcards can be delivered to people who are most interested in your business and most likely to respond. For example: previous customers, those with specific shopping habits or purchasing history, people located near your business, etc. 

Through direct mail, your marketing not only reaches these people -- it ends up directly in their hands. This gives you a unique opportunity to grab their attention with powerful copy and design that resonates with the consumer.

Radio and TV advertising, on the other hand, reaches a much wider, less targeted audience. Sure, you can advertise during certain  shows, movies, or time slots. But it's much more difficult (and costly) to generate a substantial amount of targeted leads through those outlets.

The marketing channels you use to attract customers depends on the unique needs and goals of your business. But if you're looking for a highly targeted, cost-effective way to boost sales and engage your audience, direct mail postcards still deliver like no other.