This is often accomplished by assigning key code to the list; this is especially important if you're using more than one list and want to see which one mailing list performs best. Responses are attributed to the appropriate key code as they arrive. When your campaign is complete, be sure to spend time analyzing the results. Determine which mailing lists worked, which ones failed. Why did some fail while others succeeded?
This new knowledge will help you improve the results of your next campaign. Response rates vary on the product, the offer, the look of the mailer and your list. The industry standard is somewhere between a one and three percent. Although this may mailing list sound low, keep in mind the true test of success depends on how much a customer is worth to you over the next 5, 10 or 20 years.
Will your customer buy more than one of your products in their lifetime? And remember that one new customer is a potential referral source mailing list to many other new customers. Direct mail is a powerful direct marketing tool. But it is important to realize it's a constant process of continued mailings. You need to keep your name in front of your existing customers.