Janet;

You mention the clients want to use these lists for emailing -- if that is the case what program will they be emailing and are these mass emails?

The CAN-SPAM Act requires that an address must be given the option to opt out of the future mailings and must not be used again. To effectively due this a true email program should be used such as I Contact. Using Excel makes this very easy as the Excel file can be imported into this type of program and it will eliminate duplicates.

You should check with your clients and get a clear picture of their intentions for these lists and suggest the appropriate program for their use. The forum has many threads regarding I Contact, CAN-SPAM Act and questions relating to this topic.

Good luck,

__________________
Cindy
www.eoseasy.com