Internet service providers (GMail, Yahoo, etc.) and anti-spam organizations create the spam traps to prevent spam from reaching people’s inboxes. The important thing for everyone to remember is if you use a purchased list, you are technically spamming the people on that list. Spam is unsolicited email and those people did not request your information.
It's practically impossible to overstate the importance of direct mailing lists to the success of your direct mail program. The correct mailing list will contain your most valuable prospects. The more careful you are in analyzing and selecting direct mailing lists, the better your chances for success. There are several different categories of mailing lists available on the market today ranging in cost and appropriateness for your market. When you are considering what type of mailing list to buy consider the following three types: