We have a few clients that have multiple lists for a variety of reasons. Some are postcode based, others are products etc. These clients are generally marketed to uniquely throughout the year, with Christmas though, all of a sudden comes the 'card' to all.
Any way to quickly consolidate lists without having to export each one and re-import?
If you just need to send an email to everyone, you can setup the campaign and just select all those lists as the recipients - Campaign Monitor will automatically remove any duplicates from the final send.