Delivery and Information to AOL

AOL has set a very high standard for other ISPs in terms of both mail filtering and delivery support. They were the first ISP to provide clear diagnostic information in bounce messages, the first to provide senders with a feedback loop, and one of the first to offer whitelisting services.

Filtering decisions are based on a combination of sender reputation and email content. AOL users also have the ability to block mail from specific senders.