Get the Most From Outside Lists

5. Always start with a small test quantity. Keep in mind that a minimum of 100 responses is needed to properly read the results. Therefore, if your typical response rate to prospects is 1 percent, mail (net) 10,000 names. The lower your rate of response, the higher the quantity of names you’ll want to test mail. This is important when you decide to roll out a particular list. There’s a greater likelihood the results will hold up if your initial mailing is structured properly, assuming you have enough responses.