A Suppression List is a list of suppressed e-mail addresses used by email senders to comply with relevant Email Marketing laws and rules such as the CAN-SPAM Act of 2003. CAN-SPAM requires that senders of commercial emails provide a functioning opt-out mechanism by which email recipients can unsubscribe their email address from future email messages.
The unsubscribed email addresses are usually placed into what is known as a "suppression list" which is used to "suppress" future email messages to that email address.
There are two types of suppression lists available on the system:
The local suppression list can be used to suppress the email addresses from a particular list.
The suppression lists are created whenever "hard bounced" (completely undeliverable) email addresses are detected or when you manually add certain subscribers to the suppression list.
The hard bounced subscribers are automatically added to the suppression list whenever they are detected. You can also configure the unsubscription behaviors which will allow you to add the un-subscribed members to the suppression list of a particular mailing lust so that they do not receive any further communication.
In case of the manual Spam complaints - you can also import subscribers to the suppression list.
In order to import subscribers to suppression list manually follow the steps below
Global suppression lists are generated automatically based on the hard bounced emails as well received Spam complains.
When the subscriber is added to a Global Suppression List he/she will not receive campaign emails even if they are subscribed to any of the mailing lists with the system account.
Advanced Subscriber Management