Consider a strategic plan that lays out the frequency of your mailings. Moreover, think about how long customers and prospects should stay on your mailing list.
Dropping customers from your list is a marketing decision that should be based partly on the products or services you sell. A
How frequently you mail to a customer is another marketing decision. If possible, segment your list by date of last order, frequency of orders, and average order value. In this way your mailings can remain as cost-effective and customer-centric as possible.