Filtering rules allow you to exclude one part of the message target according to criteria defined in a query, such as quarantined profiles or profiles that have already been sent a certain number of emails.
For example, you can filter the newsletter subscribers so that the subscribers that are younger than 18 years old never receive communications.
Whenever this rule is used in a message, the subscribers who are considered minors will be automatically excluded.
Two filtering rules are available by default: Exclusion of addresses (addressExclusions) and Exclusion of domains (domainExclusions). During the email analysis, these rules compare the recipient email addresses with the forbidden addresses or domain names contained in an encrypted global suppression list managed in the deliverability instance. If there is a match, the message is not sent to that recipient.
This is to avoid being blacklisted due to malicious activity, especially the use of a Spamtrap. For example, if a Spamtrap is used to subscribe via one of your web forms, a confirmation email is automatically sent to that Spamtrap, and this results in your address being automatically blacklisted.
The addresses and domain names contained in the global suppression list are hidden. Only the number of excluded recipients is indicated in the delivery analysis logs.