I like that it's very effective at finding leads for me - but not just any old ones, which is what other services can sometimes do as well or better than them (and with less effort). It also has some really useful features to help you target your campaigns more effectively too; i'm particularly fond of its ability to send mass bulk messages out in one go without having an account set up separately per recipient address etc., although this does mean they might get blocked by spam filters if there are many recipients involved within each campaign sent through mail hunter rather quickly after sending another batch via their service itself.. But these sorts issues aren't unique specifically to my experience using mailshunter either- others have had similar problems when trying different things from time to time over recent years since launch anyway.- And yes we've been running our own tests against competitors' products here & elsewhere now ourselves.