Right now we have 2 websites to import data from, which have overlapping phone numbers. Click send only allows 20k contacts per list. I would like to request a feature where you can remove duplicates across multiple lists so that since the 20k contact limit per list is not sending the same SMS to the same user twice. Right now it's a pain because we have to delete the click send lists every time, combine the lists we have together and remove duplicates, then split them, then upload to two new lists. This would cut the time in half or more, if we can remove duplicates across multiple lists inside clicksend.