In order to create our own auto-suppression list, we firstly need to access Email Studio and we click “Administrator”. once this has been selected, within “Send Management”, we need to select “Auto suppression configuration” and “Create”.
Once we have created this new list, we will add the name and description of this list in “Properties” and select the desired attributes.
The next step would be to complete the sending profiles in the “Assignment” section. There we will be able to select if we want to filter the addresses via the “sender profile” or “send classification” (“sender profile” refers to the profile of the sender and the “send classification” refers to whether the communication is commercial or transactional).
We can also assign our list to the whole organisation or to specific business units. In this way we can use different lists for each business unit.

All of these properties can be edited ex post via the administrator in Email Studio. One thing to keep in mind is that if we modify an auto-suppression list is that whichever changes we make, these will not be applied to triggered sends which are in a queue. Because of this, in case of wishing to edit an auto-suppression list, the recommended action is to delete the sends in the queue before saving the changes in the list, as subscribers who are in the queue will continue to receive the communication for which they are in the queue even if we include them in the auto-suppression list. Once the list has been updated, we will review and enable the triggers