Discussion lists often require every message to be approved by a moderator before being sent to the rest of the subscribers (moderated lists), although higher-traffic lists typically only moderate messages from new subscribers. Companies sending out promotional newsletters have the option of working with whitelist mail distributors, which agree to standards and high fines from ISPs should any of the opt-in subscribers complain. In exchange for their compliance and agreement to prohibitive fines, the emails sent by whitelisted companies are not blocked by spam filters, which often can reroute these legitimate, non-spam emails.[3]

Why does email list segmentation matter? We know that beyond relevancy, list segmentation is important from a revenue perspective. Data from the DMA indicates that segmented and targeted emails generate 58% of all email revenue. On top of this, our research found that marketers who used segmented campaigns noted as much as a 76% increase in revenue–and more than 76% of marketers say basic segmentation is part of their email marketing strategy. 

Keep your list fresh and up-to-date – It’s an unfortunate fact of life that occasionally email addresses become invalid. People’s work email addresses change as they move between companies and others abandon old AOL and Compuserve email addresses in favor of modern platforms like Gmail. However, by focusing some of your time and energy on building your email list, you can fight list decay and ensure you have a growing list of people to receive and click-through on your email campaigns.


In addition to satisfying legal requirements, email service providers (ESPs) began to help customers establish and manage their own email marketing campaigns. The service providers supply email templates and general best practices, as well as methods for handling subscriptions and cancellations automatically. Some ESPs will provide insight and assistance with deliverability issues for major email providers. They also provide statistics pertaining to the number of messages received and opened, and whether the recipients clicked on any links within the messages.

Save any new documentation as a PDF for download, and require that individuals enter their names and email addresses in order to access it. The value of the information you are offering is directly proportional to the amount of personal data your customers are willing to provide, so make sure the tradeoff is fair. A highly anticipated white paper or report can garner a high number of new email subscribers who are openly expressing interest in your brand, so don’t leave this opportunity unaddressed.


There are many vendors out there who sell lists or rent them (though renting means that the list seller maintains ownership and control of the email list). These are collections of email addresses that the vendors sell to any business or individual who can pay the fees. Your email list is considered to be a purchased or shared list if it’s provided to you by a third party, like an email list vendor or affiliate. There's a few ways that vendors build these non opt-in email lists.
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