Marketers need to authenticate their email to prove to ISPs that their messages are legitimate, helping to ensure delivery to their subscribers. Sender Policy Framework (SPF) verifies a brand’s identity; DomainKeys Identified Mail (DKIM) verifies the message wasn’t tampered with in transmission; and Domain Based Authentication Reporting and Conformance (DMARC) requires both SPF and DKIM approval in order to authenticate.
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:
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