The subject header says it all.   I've got a giant list of customers in California.   But I've also got a list of "Customers of Client X".   Now I want to do a mailing to my giant California list, but need to EXCLUDE anyone on that list who is also in the "Customers of Client X" list.   Can someone please explain how you can easily do this in Constant Contact?    I have been using another email provider, and this was simple to do.  You simply selected the California list as a "send to" list, and told the system to exclude anyone on the "Customers of Client X" list.   Thanks in advance for any help.   Michael ... View more