Refer to Randy's comments above and check with your state laws.
Consider: Once you get back a statement for bad address, most likely you will refrain from sending them additonal statements until you have the correct address, right? If so, what additional costs do you incur by not mailing a statement on a monthly basis that you can justify charging them each month?
If you think it will be a tool to get the customer to rush in and change their address, your wrong. Most customers do not read their fee updates and will not be aware of it.
Plus, if they are not getting a monthly statement, how will they know that you are charging them each month? Hence, how can they fix it or stop if they do not know?
It will appear to customers, and perhaps examiners, that your management found a great resouce of a little extra fee income that requires no extra work! Most customers can justify and accept the first charge...many will not tolerate additonal ones when they are not in the position to be aware of it and to fix it.
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I don't repeat gossip, so listen closely...