Copernica improves deliverability
Some receiving email servers verify the sender address of an incoming party with the sending party. Because of the way our servers were set up however, in some cases receiving servers weren’t able to check if an email address existed. In some cases, this could cause emails not be delivered.
In the meanwhile we have changed our setting so that receiving parties are always able to check if an email address exists. In some cases this might lead to an improved deliverability.