What is email list hygiene?

Email list hygiene is the ongoing practice of keeping your subscriber database accurate, permission based, and free of harmful or decayed addresses. It includes removing invalid addresses, which consist of hard bounces such as user does not exist and soft bounces such as mailbox full. It also includes detecting spamtraps such as pristine spamtraps created only for anti abuse monitoring and recycled spamtraps which are abandoned inboxes reactivated by providers. It is the regular maintenance that keeps your vessel seaworthy before it enters the inbox waters. Think of list hygiene as the routine inspection of your cargo before you leave the harbor. Clean cargo sails smoothly. Contaminated cargo sinks the trip.