A stagnant list is a depreciating asset. Many companies have email lists they have never used because they started collecting addresses long before they decided what they wanted to send.
Then there are lists that haven't been used for a long time because of changes in a company's strategy or budget.
Because people quickly forget that they gave you permission, if you don't send email regularly, your list may very well be worthless.
Conclusion - Emailing regularly to your mailing lists will help you to built a valuable and profitable relationship with your contacts.
source: returnpath.biz
