I like how easy it is for me as an individual marketer or sales person using warm up in box with my own list! It's super simple once set-up (which can take just minutes) but takes some time if not implemented correctly at first use - which isn't hard given all their help guides are clear & concise about what needs done/how things should be setup initially so that they work best when used by others too!! Have been able get great results from implementing this tool into campaigns where previously we struggled getting any response back whatsoever due mostly because people were unaware who was contacting them via mail etc., now everyone has heard us before even having one conversation wth potential clients thanks very much.