In this article, you'll learn about allowlisting, and when and how to request it. If your subscribers at a certain company or private email domain have trouble receiving Mailchimp emails, you may want to ask them to allowlist Mailchimp’s delivery IP addresses as a possible solution.
Sometimes, these network firewalls and filters can block your campaigns.
Private email domains tend to have more aggressive firewalls and spam filters than Gmail or other free webmail providers.
