We are constantly updating our databases to ensure the best customer experience possible. However, while this is unlikely to happen, it is possible that a person may change jobs, or leave their job between contact updates.
It may therefore happen that an email sent by Oliver is no longer used, and you receive a notification such as "Mail Delivery Subsystem", "Mail Delivery Failure".
In this case, here is how we deal with this in Oliver :
You are not charged for the email
The contact will not appear in your contacts.
This action will be removed from your campaign statistics.